脸色晦暗>荆楚理工学院地址
matter是什么意思
deliveranceSynthesis of 1'-Substituted Derivatives of 1,2,3,4,5-
Pentaphenylferrocene
期刊名称: Organometallics
行尸走肉 第四季作者: Butler, David C. D.,Richards, Christopher J.
2015年中考>红宝书feedburner年份: 2002年
期号: 第24期
toheart摘要:Pentaphenylferrocene was synthesized in 57% overall yield from 1-bromopentaphenylcyclopentadiene. Functionalization of the unsubstituted cyclopentadienyl ring using the FriedelCrafts reaction gave 1'-formyl- and 1'-(2-chlorobenzoyl)-substituted derivatives. Hydrolysis of the latter provided the corresponding 1'-carboxylic acid. This was readily transformed via a modified Curtius rearrangement into 1'-amino-1,2,3,4,5-pentaphenylferrocene. This methodology also provided (η 5 -aminocyclopentadienyl)(η 4 -tetraphenylcyclobutadiene)cobalt and gave an improved synthesis of
aminoferrocene.
四六级改革
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