Alkyl Isobenzofurans from Phthalides; Inter and Intramolecular Diels-Alder Reactions
作者:Sanath K. Meegalla、Russell Rodrigo
DOI:10.1055/s-1989-27438
日期:——
A general procedure for the conversion of phthalides 1 to alkyl isobenzofurans 4 is described and illustrated with nine. examples. Thus, the alkylidene phthalans 3 produced from the phthalides 1 in one step are in acid catalyzed equilibrium with the. alkyl isobenzofurans 4 which are trapped in situ by dienophiles as the inter- and intramolecular Diels-Alder adducts 5-9.
描述了一种将邻苯二甲酯1转化为烷基异苯并呋喃4的一般程序,并用九个例子进行了说明。因此,从邻苯二甲酯1一步生成的烷基苯丙烯化合物3在酸催化下与烷基异苯并呋喃4处于平衡状态,这些烷基异苯并呋喃4在适当的二烯亲合试剂的作用下被原位捕获,形成相互作用和分子内的Diels-Alder加成物5-9。