Use of cyclobutyl derivatives as intermediates in the synthesis of 1,2a,3,8b-tetrahydro-2H-cyclobuta[c]chromenes
作者:Angela M Bernard、Costantino Floris、Angelo Frongia、Pier P Piras、Francesco Secci
DOI:10.1016/j.tet.2003.11.018
日期:2004.1
Starting from cyclobutanones and tertiary cyclobutanols several new chromenes containing a cyclobutane ring have been prepared by acid catalyzed intramolecular alkylation of an oxygen-carrying aromatic ring. Interestingly one of the cyclobutanols leads to 3-[(4-methoxyphenoxy)methyl]-2,2,3-trimethylcyclopentanone that is a precursor in the synthesis of the carotenoid pigment capsorubin.
从环丁酮和叔环丁醇开始,已经通过酸催化携带氧的芳族环的分子内烷基化反应制备了几种含有环丁烷环的新色烯。有趣的是,一种环丁醇导致3-[((4-甲氧基苯氧基)甲基] -2,2,3-三甲基环戊酮,它是类胡萝卜素色素辣椒红素合成中的前体。