Tetrakis (1-methylcyclopropyl) ethylene in four steps from α-methyl-γ-butyrolactone
作者:Gerald Böhrer、Rudolf Knorr
DOI:10.1016/0040-4039(84)80102-1
日期:1984.1
A short and efficient synthesis of bis(1-methylcyclopropyl)ketone (=6}) via the spiro-acetal =4} from α-methyl-γ-butyrolactone (=1}) been found, and reductive dimerization of =6} by McMurry coupling yields tetrakis(1-methylcyclopropyl)ethylene (=7}) in competition with ring-opened products (=8} and (=9}).
发现由α-甲基-γ-丁内酯(= 1})经由螺缩醛= 4}短而有效地合成了双(1-甲基环丙基)酮(= 6}),并且通过McMurry偶联得到的= 6}可以与开环产物(= 8}和(= 9})竞争产生四(1-甲基环丙基)乙烯(= 7})。