An intramolecular darzens reaction of the ester group with the active halogen group. Preparation of 2,7-dioxabicyclo[4.1.0] heptanes from 1-bromo-4-acyloxybutane derivatives
作者:Michiharu Mitani、Hiroyuki Hirayama、Hiroshi Takeuchi、Kikuhiko Koyama
DOI:10.1016/s0040-4039(00)96567-5
日期:1987.1
When 1-bromo-4-acyloxybutanes having electron-withdrawing groups at 1-position, which were obtained by Cu(I)-catalyzed photochemical addition of 1-bromo-2-acyloxyethanes to electron-deficient olefins, were subjected to treatment with potassium t-butoxide, 2,7-dioxabicyclo[4.1.0] heptanes were obtained.
当通过Cu(I)催化1-溴-2-酰氧基乙烷向缺电子的烯烃的光化学加成反应而获得在1-位具有吸电子基团的1-溴-4-酰氧基丁烷时,用钾处理获得了叔丁醇,2,7-二氧杂双环[4.1.0]庚烷。