Preparation of 2‐Amino‐1,3‐butadienes as<i>N</i>‐Pyridine Derivatives
作者:Harald Dugstad、Kjell Undheim
DOI:10.1080/00397910801981672
日期:2008.5
from the vinyl‐substituted 3‐position. A subsequent ring opening provided 2‐substituted 1,3‐butadienes with the azine appended at the annular nitrogen. Simple S‐alkylation yielded a corresponding azinium salt, thereby introducing electrophilic character to the 1,3‐butadiene system. Hydrolysis of the sulfide function provided the corresponding pyridin-2(1H)‐one attached to the 1,3‐butadiene in the 2‐position