1-bromo-2-chlorocyclopropene--A new cycloproparene synthon. Synthesis of 1H-Cyclopropa[b]phenanthrene
作者:W.E. Billups、Long-Jin Lin、Benny E. Arney、Wayne A. Rodin、Edward W. Casserly
DOI:10.1016/0040-4039(84)80034-9
日期:——
Treatment of 1-bromo-2,2-dichloro(trimethylsilyl)cyclopropane (2) with tetra-n-butylammonium fluoride in tetrahydrofuran yields 1-bromo-2-chlorocyclopropene (1). 1H-Cyclopropa[b]phenanthrene (3) can be prepared by aromatization of the Diels-Alder adduct of 1 and 1,2-dimethylene-3,5,6,7,8,9-hexahydronaphthalene (6) using DDQ followed by potassium t-butoxide in tetrahydrofuran.
用氟化四正丁基铵在四氢呋喃中处理1-溴-2,2-二氯(三甲基甲硅烷基)环丙烷(2),得到1-溴-2-氯环丙烯(1)。1H-环丙烷[b]菲(3)可以通过使用DDQ然后将1和1,2-二亚甲基-3,5,6,7,8,9-六氢萘的Diels-Alder加合物芳构化而制得四氢呋喃中的叔丁醇钾。