Chemistry is an experimental science, Application In Synthesis of 5-Chloro-3-phenylbenzo[c]isoxazole, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 719-64-2, Name is 5-Chloro-3-phenylbenzo[c]isoxazole, molecular formula is C13H8ClNO, belongs to benzisoxazole compound. In a document, author is ZIPSE, H.
A QUANTUM-MECHANICAL AND STATISTICAL-MECHANICAL EXPLORATION OF THE THERMAL DECARBOXYLATION OF KEMPS OTHER ACID (BENZISOXAZOLE-3-CARBOXYLIC ACID) – THE INFLUENCE OF SOLVATION ON THE TRANSITION-STATE GEOMETRIES AND KINETIC ISOTOPE EFFECTS OF A REACTION WITH AN AWESOME SOLVENT EFFECT
The decarboxylation of benzisoxazole-3-carboxylate has been investigated in detail by ab initio molecular orbital calculations. The effects of solvent on transition state geometries have been investigated by inclusion of one or two water molecules in the ab initio calculations. The decarboxylation and ring opening steps are found to be concerted. Kinetic isotope effects have been calculated for the carboxylate-C-13-labeled compound for various transition state geometries. Satisfactory agreement has been found between the experimental values for the reaction in water and ab initio HF/6-31G* calculated values for systems including four hydrogen bonds to the carboxylate group. The variations in free energies of solvation along the reaction path in five different solvents (water, methanol, chloroform, acetonitrile, tetrahydrofuran) have been calculated with Monte-Carlo free energy perturbation calculations. Solvent effects are generally overestimated, but the experimental trends have been reproduced for four of the five solvents, The effects of ion pairing have been tested by inclusion of a tetramethylguanidinium cation into the Monte-Carlo simulations for acetonitrile and tetrahydrofuran. With inclusion of ion pairing, the relative rates of THF and acetonitrile are reproduced much better, but solvent effects are underestimated relative to the reaction in water.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 719-64-2, in my other articles. Application In Synthesis of 5-Chloro-3-phenylbenzo[c]isoxazole.
Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics