Aromatic ring synthesis by 1,3-michael-claisen annulation: Application to a trolox analogue and to precocene II
作者:Guy Soiladié、Dominique Boeffel、Jean Maignan
DOI:10.1016/0040-4020(95)01044-0
日期:1996.2
4-dihydro-2-ethoxycarbonyl-6-methoxy-7-hydroxy- benzopyran and Precocene II, were prepared from substituted α-methylene-δ- valerolactone and 1,1-bis-(methylthio)-2-propanone or butanone, via a 1,3-Michael- Claisen annulation.
从取代的α-亚甲基-δ-戊内酯和1,1-双-(甲硫基)-2制备Trolox类似物3,4-二氢-2-乙氧基羰基-6-甲氧基-7-羟基苯并吡喃和前茂世II -丙烷或丁酮,通过1,3-Michael- Claisen环空法。