A Method for the Synthesis of Carbene Precursors from Aldehydes and the Metalates (5-C5H5)(CO)2<
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- 作者：Ronald D. Theys ; Roy M. Vargas ; Qinwei Wang ; and M. Mahmun Hossain
- 刊名：Organometallics
- 出版年：1998
- 出版时间：March 30, 1998
- 年：1998
- 卷：17
- 期：7
- 页码：1333 - 1339
- 全文大小：192K
- 年卷期：v.17,no.7(March 30, 1998)
- ISSN：1520-6041
文摘
Nucleophilic addition of the metalateCp(CO)2Fe-M+ (M = Na, K)to aldehydes RCHO (R= Ph, CH3, p-OCH3Ph,p-ClPh, p-CH3Ph,p-CF3Ph,o-OCH3Ph, andCH=C(CH3)2) andsubsequent capture with ClSi(CH3)3provided the (
-siloxyalkyl)iron complexesCp(CO)2FeCH(OSiMe3)R in 42-79% yield. This newreaction was extended to the indenyl-ligatedmetalateIn(CO)2Fe-Na+ withseveral aldehydes RCHO (R = Ph, CH3,p-OCH3Ph).Treatment of the (-siloxyalkyl)iron complexes withtrimethylsilyl triflate at between -25and -78 
C, in the presence of alkenes, gave cyclopropanes throughiron carbene complexes.
-siloxyalkyl)iron complexesCp(CO)2FeCH(OSiMe3)R in 42-79% yield. This newreaction was extended to the indenyl-ligatedmetalateIn(CO)2Fe-Na+ withseveral aldehydes RCHO (R = Ph, CH3,p-OCH3Ph).Treatment of the (-siloxyalkyl)iron complexes withtrimethylsilyl triflate at between -25and -78 C, in the presence of alkenes, gave cyclopropanes throughiron carbene complexes.