Preparation and properties of some thiouronium fluorenylides and cyclopentadienylides and the attempted preparation of selenouronium and guanidinium fluorenylides
作者:D. Lloyd、R.W. Millar、H. lumbroso、C. liégeois
DOI:10.1016/0040-4020(77)84089-1
日期:1977.1
cyelopentadienylides, prepared by treatment of the corresponding thiouronium salts with non-aqueous base, exist as tautomeric mixtures of the fluorenylide and fluorenylisothiourea, but undergo reactions typical of ylides, e.g. Wittig reactions with aldehydes or nitrosobenzene; a 2,3,4-triphenylcyclopentadienylide gave anomalous products. The ylides also react with acids, alkali, benzyl bromide, and dimethylacetylene
通过用非水碱处理相应的硫代铀鎓盐而制备的一些稳定的硫代铀鎓芴基和环戊二烯基化物以芴基和芴基异硫脲的互变异构体混合物形式存在,但是会经历典型的酰基化物反应,例如与醛或亚硝基苯的维蒂希反应;2,3,4-三苯基环戊二烯基化物产生异常产物。所述酰基化物还与酸,碱,苄基溴和二甲基乙炔二羧酸酯反应。N,N'-二苯基-硒代铀鎓和-胍鎓类似物似乎完全作为非碘化互变异构体存在。