作者:Axel Mayer、Norbert Rumpf、Sabine Hillmann、Herbert Meier
DOI:10.1002/hlca.201500083
日期:2015.8
Two different synthetic concepts led to the formation of 17, 19, and 29, the first structural isomeric benzobis[1,3]oxathiins. Hetero‐DielsAlder reactions of diethyl mesoxylate 14 and the open valence isomers of the benzobisthietes 12 and 18 yielded the linear benzobis[1,3]oxathiin 17 and its angular isomer 22, respectively. The isomeric angular system 29 could be obtained by a twofold O,S‐acetalization
两种不同的合成概念导致了17、19和29的形成,这是第一种结构异构苯并双[1,3] oxathiins。杂狄尔斯阿尔德二乙mesoxylate的反应14和benzobisthietes的开放化合价的异构体12和18,产生线性苯并双[1,3] oxathiin 17和其角异构体22分别。异构体角体系29可以通过二羟基二硫烷基化合物27和丙酮(28)的双O,S-缩醛化反应获得。