Electrophilic Substitution of Hydrogen in Betulin and Diacetylbetulin
作者:I. V. Bodrikov、Yu. A. Kurskii、A. A. Chiyanov、A. Yu. Subbotin
DOI:10.1134/s107042801801013x
日期:2018.1
Betulin and diacetylbetulin, which can be regarded as stericallyhinderedalkenes, reacted with N-chloro-, N-bromo-, and N-iodosuccinimides to give products of allylic and vinylic substitution in quantitative overall yield. The contribution of allylic substitution increases in the series Cl < Br < I. Quantum chemical simulation of the reactions of diacetylbetulin with N-halosuccinimides showed that