The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Hydroformylation of furan compounds in the presence of cobalt catalysts》. Authors are Mistrik, E. J..The article about the compound:Methyl tetrahydrofuran-2-carboxylatecas:37443-42-8,SMILESS:O=C(C1OCCC1)OC).Formula: C6H10O3. Through the article, more information about this compound (cas:37443-42-8) is conveyed.
The hydroformylation of furans, e.g., 2-methylfuran, furfural, Me 2-furanacrylate and Me 2-furancarboxylate, in the presence of Co2(CO)8 and Co2(CO)7(PPh3)2 was studied. In addition to the products of hydroformylation, hydrogenation products were identified. The relative reactivity of the furans was estimated and a reaction mechanism proposed.
In addition to the literature in the link below, there is a lot of literature about this compound(Methyl tetrahydrofuran-2-carboxylate)Formula: C6H10O3, illustrating the importance and wide applicability of this compound(37443-42-8).
Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics