Regio- and stereodirection of addition of tetrazole to α,β-acetylenic γ-hydroxy nitrile: synthesis of 1- and 2-(Z)-(2-cyanoethenyl- 1-hydroxyalkyl)tetrazoles
摘要:
Using the example of the reaction of tetrazole with 4-hydroxy-4-methyl-2-pentynonitrile, conditions were found under which (Z)-4-hydroxy-4-methyl-3-(1H-tetrazol-1-yl)2-pentenonitrile was formed by regio- and stereoselective addition at atom N(1) of tetrazole (yield 85%, selectivity 95%).