SYNTHETIC POTENTIAL OF TRIFLUOROMETHYL SUBSTITUTED TIN HETEROCYCLES

被引:31
作者
BURGER, K
GEITH, K
SEWALD, N
机构
[1] Organisch-Chemisches Institut der Technischen Universität München, Lichtenbergstraße 4
关键词
D O I
10.1016/S0022-1139(00)81563-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
4,4-Bis(trifluoromethyl) substituted heterodienes of type (F3C)2CN-C(R1)=X (X = O, S, NR2) react with tin (II) compounds (tin (II) chloride, stannocene etc.] to give [4+1] cycloadducts. The cycloaddition process causes an 'Umpolung' at the carbon atom the two trifluoromethyl groups are attached to. This is the precondition for a controlled, stepwise elimination of fluoride from one of the two trifluoromethyl groups. Trifluoromethyl substituted tin heterocycles therefore are useful building blocks for synthesis of fluoro and trifluoromethyl substituted organic compounds. © 1990.
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页码:105 / 122
页数:18
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