Day: October 20, 2021

Xia, HD; Li, ZL; Gu, QS; Dong, XY; Fang, JH; Du, XY; Wang, LL; Liu, XY in [Xia, Hai-Dong; Dong, Xiao-Yang; Fang, Jia-Heng; Du, Xuan-Yi; Wang, Li-Lei; Liu, Xin-Yuan] Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China; [Xia, Hai-Dong; Dong, Xiao-Yang; Fang, Jia-Heng; Du, Xuan-Yi; Wang, Li-Lei; Liu, Xin-Yuan] Southern Univ Sci & Technol, Dept Chem, Guangdong Prov Key Lab Catalysis, Shenzhen 518055, Peoples R China; [Li, Zhong-Liang; Gu, Qiang-Shuai] Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China; [Li, Zhong-Liang; Gu, Qiang-Shuai] Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China published Photoinduced Copper-Catalyzed Asymmetric Decarboxylative Alkynylation with Terminal Alkynes in 2020, Cited 88. Quality Control of 2-Phenylbutanoic acid. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

We describe a photoinduced copper-catalyzed asymmetric radical decarboxylative alkynylation of bench-stable N-hydroxyphthalimide(NHP)-type esters of racemic alkyl carboxylic acids with terminal alkynes, which provides a flexible platform for the construction of chiral C(sp(3))-C(sp) bonds. Critical to the success of this process are not only the use of the copper catalyst as a dual photo- and cross-coupling catalyst but also tuning of the NHP-type esters to inhibit the facile homodimerization of the alkyl radical and terminal alkyne, respectively. Owing to the use of stable and easily available NHP-type esters, the reaction features a broader substrate scope compared with reactions using the alkyl halide counterparts, covering (hetero)benzyl-, allyl-, and aminocarbonyl-substituted carboxylic acid derivatives, and (hetero)aryl and alkyl as well as silyl alkynes, thus providing a vital complementary approach to the previously reported method.

Quality Control of 2-Phenylbutanoic acid. Welcome to talk about 90-27-7, If you have any questions, you can contact Xia, HD; Li, ZL; Gu, QS; Dong, XY; Fang, JH; Du, XY; Wang, LL; Liu, XY or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Senaweera, S; Cartwright, KC; Tunge, JA in [Senaweera, Sameera; Cartwright, Kaitie C.; Tunge, Jon A.] Univ Kansas, Dept Chem, 1567 Irving Hill Rd, Lawrence, KS 66045 USA published Decarboxylative Acetoxylation of Aliphatic Carboxylic Acids in 2019, Cited 82. Recommanded Product: 90-27-7. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

Organic molecules bearing acetoxy moieties are important functionalities in natural products, drugs, and agricultural chemicals. Synthesis of such molecules via transition metal-catalyzed C-O bond formation can be achieved in the presence of a carefully chosen directing group to alleviate the challenges associated with regioselectivity. An alternative approach is to use ubiquitous carboxylic acids as starting materials and perform a decarboxylative coupling. Herein, we report conditions for a photocatalytic decarboxylative C-O bond formation reaction that provides rapid and facile access to the corresponding acetoxylated products. Mechanistic investigations suggest that the reaction operates via oxidation of the carboxylate followed by rapid decarboxylation and oxidation by Cu(OAc)(2).

Recommanded Product: 90-27-7. Welcome to talk about 90-27-7, If you have any questions, you can contact Senaweera, S; Cartwright, KC; Tunge, JA or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

HPLC of Formula: C10H12O2. Zhang, PL; Cheng, Q; Xu, WF; Tang, KW in [Zhang, Panliang; Cheng, Qing; Xu, Weifeng; Tang, Kewen] Hunan Inst Sci & Technol, Dept Chem & Chem Engn, Yueyang 414000, Hunan, Peoples R China published Modeling and optimization of lipase-catalyzed hydrolysis for production of (S)-2-phenylbutyric acid enhanced by hydroxyethyl-beta-cyclodextrin in 2019, Cited 44. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

An efficient reactive system was established to produce (S)-2-phenylbutyric acid (2-PBA) through the enzymatic enantioselective hydrolysis of 2-phenylbutyrate ester (2-PBAE) in aqueous medium. Lipase CALA from Canadian antarctica and hexyl 2-phenylbutyrate (2-PBAHE) were identified upon screening as the best enzyme and substrate, respectively. Adding hydroxyethyl-beta-cyclodextrin (HE-beta-CD) to improve the solubility of the substrate resulted in a 1.5 times increase in substrate conversion while retaining a high enantioselectivity compared with that when HE-beta-CD was not added. The effects of lipase concentration, substrate concentration and HE-beta-CD concentration, temperature, pH, and reaction time on enantiomeric excess and conversion rate were investigated, and the optimal conditions were identified using response surface methodology (RSM). Under the optimal conditions, namely 50 mg/mL lipase CALA, 30 mmol/L substrate, 60 mmol/L HE-beta-CD, pH of 6.5, temperature of 83 degrees C and reaction time of 18 h, the enantiomeric excess and overall conversion rate were 96.05% and 27.28%, respectively. This work provides an efficient alternative method for improving the conversion of aromatic ester substrates by including beta-cyclodextrin in an aqueous hydrolysis reaction system.

HPLC of Formula: C10H12O2. Welcome to talk about 90-27-7, If you have any questions, you can contact Zhang, PL; Cheng, Q; Xu, WF; Tang, KW or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

In 2020 ORGANOMETALLICS published article about AUXILIARY BASIS-SETS; BIMETALLIC OXIDATIVE ADDITION; ATOM-TRANSFER CARBONYLATION; ZETA-VALENCE QUALITY; ARYL HALIDES; ELECTRONIC-STRUCTURE; COMPLEX CATALYST; ALLYL HALIDES; ALKYL IODIDES; LOW-PRESSURE in [Sabater, Sara; Menche, Maximilian; Ghosh, Tamal; Hashmi, A. Stephen K.; Schaub, Thomas] Catalysis Res Lab CaRLa, D-69120 Heidelberg, Germany; [Rueck, Katharina S. L.; Paciello, Rocco; Schaub, Thomas] BASF SE, Organ Synth, D-67056 Ludwigshafen, Germany; [Menche, Maximilian; Schaefer, Ansgar] BASF SE, Quantum Chem, D-67056 Ludwigshafen, Germany; [Krieg, Saskia; Comba, Peter] Heidelberg Univ, Anorgan Chem Inst, D-69120 Heidelberg, Germany; [Hashmi, A. Stephen K.] Heidelberg Univ, Organ Chem Inst, D-69120 Heidelberg, Germany in 2020, Cited 75. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7. Recommanded Product: 2-Phenylbutanoic acid

The carbonylation of alcohols represents a straightforward and atom-efficient methodology for the preparation of carboxylic acids. It is desirable to perform these reactions under precious metal-free and low-pressure conditions, with regioselectivity control. In this work, we present a detailed mechanistic study of a catalytic system based on NiI2, which can carbonylate benzylic alcohols in a highly regioselective manner to the corresponding branched carboxylic acids, core motifs for nonsteroidal drugs. The combination of catalytic amounts of nickel and iodide is crucial for efficient catalytic and regioselective conversion. Quantum-chemical computations were used to evaluate the underlying mechanistic processes. They revealed that a combination of two mechanisms is responsible for the observed reactivity and that the oxidative addition of alkyl halides to the Ni(0) species follows a radical oxidation pathway via two one-electron steps.

Recommanded Product: 2-Phenylbutanoic acid. Welcome to talk about 90-27-7, If you have any questions, you can contact Sabater, S; Menche, M; Ghosh, T; Krieg, S; Ruck, KSL; Paciello, R; Schafer, A; Comba, P; Hashmi, ASK; Schaub, T or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

An article Mechanistic Insights into Copper-Catalyzed Carboxylations WOS:000535187200010 published article about DENSITY-FUNCTIONAL THEORY; CO2 INSERTION; CARBON; ALKENES; DFT; HYDROCARBOXYLATION; THERMOCHEMISTRY in [Obst, Marc F.; Hopmann, Kathrin H.] UiT Arctic Univ Norway, Hylleraas Ctr Quantum Mol Sci, Dept Chem, N-9037 Tromso, Norway; [Gevorgyan, Ashot; Bayer, Annette] UiT Arctic Univ Norway, Dept Chem, N-9037 Tromso, Norway in 2020, Cited 38. Safety of 2-Phenylbutanoic acid. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7

The copper-NHC-catalyzed carboxylation of organo-boranes with CO2 was investigated using computational and experimental methods. The DFT and DLPNO-CCSD(T) results indicate that nonbenzylic substrates are converted via an inner-sphere carboxylation of an organocopper intermediate, whereas benzylic substrates may simultaneously proceed along both inner- and outer-sphere CO2 insertion pathways. Interestingly, the computations predict that two conceptually different carboxylation mechanisms are possible for benzylic organoboranes, one being copper-catalyzed and one being mediated by the reaction additive CsF. Our experimental evaluation of the computed reactions confirms that carboxylation of nonbenzylic substrates requires copper catalysis, whereas benzylic substrates can be carboxylated with and without copper.

Safety of 2-Phenylbutanoic acid. Welcome to talk about 90-27-7, If you have any questions, you can contact Obst, MF; Gevorgyan, A; Bayer, A; Hopmann, KH or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Application In Synthesis of 2-Phenylbutanoic acid. Li, JH; Wei, JL; Zhu, BC; Wang, T; Jiao, N in [Li, Junhua; Wei, Jialiang; Zhu, Bencong; Jiao, Ning] Peking Univ, Sch Pharmaceut Sci, State Key Lab Nat & Biomimet Drugs, Xue Yuan Rd 38, Beijing 100191, Peoples R China; [Wang, Teng] Beihang Univ, Sch Chem, Xue Yuan Rd 38, Beijing 100191, Peoples R China; [Jiao, Ning] Chinese Acad Sci, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China published Cu-catalyzed oxygenation of alkene-tethered amides with O(2)via unactivated C & xe001;C bond cleavage: a direct approach to cyclic imides in 2019, Cited 105. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

The transformations of unactivated alkenes through C & xe001;C bond double cleavage are always attractive but very challenging. We report herein a chemoselective approach to valuable cyclic imides by a novel Cu-catalyzed geminal amino-oxygenation of unactivated C & xe001;C bonds. O-2 was successfully employed as the oxidant as well as the O-source and was incorporated into alkenyl amides via C & xe001;C bond cleavage for the efficient preparation of succinimide or glutarimide derivatives. Moreover, the present strategy under simple conditions can be used in the late-stage modification of biologically active compounds and the synthesis of pharmaceuticals, which demonstrated the potential application.

Application In Synthesis of 2-Phenylbutanoic acid. Welcome to talk about 90-27-7, If you have any questions, you can contact Li, JH; Wei, JL; Zhu, BC; Wang, T; Jiao, N or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Application In Synthesis of 2-Phenylbutanoic acid. Recently I am researching about B(C6F5)(3)-CATALYZED HYDROSILYLATION; CARBONYL; MECHANISM; SILANES, Saw an article supported by the Berlin Graduate School of Natural Sciences and Engineering; Projekt DEAL. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Roy, A; Oestreich, M. The CAS is 90-27-7. Through research, I have a further understanding and discovery of 2-Phenylbutanoic acid

Little-explored hydrosilylation of ketenes promoted by main-group catalysts is reported. The boron Lewis acid tris(pentafluorophenyl)borane accelerates the slow uncatalyzed reaction of ketenes and hydrosilanes, thereby providing a convenient access to the new class of beta,beta-di- and beta-monoaryl-substituted aldehyde-derived silyl enol ethers. Yields are moderate to high, and Z configuration is preferred. The corresponding silyl bis-enol ethers are also available when using dihydrosilanes. The related trityl-cation-initiated hydrosilylation involving self-regeneration of silylium ions is far less effective.

Application In Synthesis of 2-Phenylbutanoic acid. Welcome to talk about 90-27-7, If you have any questions, you can contact Roy, A; Oestreich, M or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

SDS of cas: 90-27-7. In 2019 ANGEW CHEM INT EDIT published article about PRACTICAL CHIRAL AUXILIARY; ENANTIOSELECTIVE PROTONATION; BRONSTED ACID; DISILYL ACETALS; ENOL ETHERS; ALKYLATION; PSEUDOEPHEDRINE; GENERATION; ALDEHYDES in [Mandrelli, Francesca; Blond, Aurelie; James, Thomas; Kim, Hyejin; List, Benjamin] Max Planck Inst Kohlenforsch, Kaiser Wilhelm Pl 1, D-45470 Mulheim, Germany in 2019, Cited 52. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

We report a highly enantioselective catalytic protonation of bis-silyl ketene acetals. Our method delivers alpha-branched carboxylic acids, including nonsteroidal anti-inflammatory arylpropionic acids such as Ibuprofen, in high enantiomeric purity and high yields. The process can be incorporated in an overall deracemization of alpha-branched carboxylic acids, involving a double deprotonation and silylation followed by the catalytic asymmetric protonation.

SDS of cas: 90-27-7. Welcome to talk about 90-27-7, If you have any questions, you can contact Mandrelli, F; Blond, A; James, T; Kim, H; List, B or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

An article Palladium-Catalyzed Selective meta-C-H Deuteration of Arenes: Reaction Design and Applications WOS:000482329000016 published article about BOND FUNCTIONALIZATIONS; H/D EXCHANGE; DEUTERIUM; DRUG; OLEFINATION; METABOLISM; ACTIVATION; TRITIATION; COMPLEXES; DISCOVERY in [Bag, Sukdev; Sur, Aishanee; Bhowmick, Suman; Maiti, Debabrata] Indian Inst Technol, Dept Chem, Mumbai 400076, Maharashtra, India; [Petzold, Martin; Werz, Daniel B.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Organ Chem, Hagenring 30, D-38106 Braunschweig, Germany in 2019, Cited 53. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7. Application In Synthesis of 2-Phenylbutanoic acid

Deuterium-labeled compounds find wide applications in kinetic studies, and within the pharmaceutical industry. An easily removable pyrimidine-based auxiliary has been employed for the meta-C-H deuteration of arenes. The scope of this Pd-catalyzed deuteration using commercially available [D-1]- and [D-4]-acetic acid has been demonstrated by its application in phenylacetic acid and phenylmethanesulfonate derivatives. A detailed mechanistic study led us to explore the reversibility of the non-rate determining C-H activation step. The present study of meta-deuterium incorporation illustrates the template morphology in terms of selectivity. The applicability of this method has been demonstrated by the selective deuterium incorporation into various pharmaceuticals.

Application In Synthesis of 2-Phenylbutanoic acid. Welcome to talk about 90-27-7, If you have any questions, you can contact Bag, S; Petzold, M; Sur, A; Bhowmick, S; Werz, DB; Maiti, D or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Mondal, R; Chakraborty, G; van Vliet, KM; van Leest, NP; de Bruin, B; Paul, ND in [Mondal, Rakesh; Chakraborty, Gargi; Paul, Nanda D.] Indian Inst Engn Sci & Technol, Dept Chem, Bot Garden, Howrah 711103, India; [van Vliet, Kaj M.; van Leest, Nicolaas P.; de Bruin, Bas] Univ Amsterdam, vant Hoff Inst Mol Sci, Homogeneous Catalysis Grp, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands published Copper-catalyzed oxidative dehydrogenative functionalization of alkanes to allylic esters in 2020, Cited 60. Category: Benzisoxazole. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

Herein, we report a general, efficient and solvent-free method for the one-pot synthesis of allylic esters via dehydrogenation of unactivated alkanes and subsequent oxidative cross coupling with different substituted carboxylic acids. A simple, well defined and air stable Cu(II)-complex, [Cu(MeTAA)], featuring a tetraazamacrocyclic ligand (tetramethyltetraaza[14]annulene (MeTAA)) is used as the catalyst. A wide variety substituted allylic esters were synthesized in high yields starting from readily available starting materials. Control reactions were carried out to understand the reaction sequence and the plausible mechanism.

Category: Benzisoxazole. Welcome to talk about 90-27-7, If you have any questions, you can contact Mondal, R; Chakraborty, G; van Vliet, KM; van Leest, NP; de Bruin, B; Paul, ND or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics