論文

2002年2月

Synthesis of 2-pyranylidene or (2-furyl)carbene-chromium complexes from conjugated enyne carbonyl compounds with Cr(CO)(5)(THF)

JOURNAL OF ORGANOMETALLIC CHEMISTRY
  • K Miki
  • ,
  • T Yokoi
  • ,
  • F Nishino
  • ,
  • K Ohe
  • ,
  • S Uemura

645
1-2
開始ページ
228
終了ページ
234
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/S0022-328X(01)01328-6
出版者・発行元
ELSEVIER SCIENCE SA

The reaction of beta-ethynyl alpha,beta-unsaturated esters or amides with Cr(CO)(5)(L) (L = Et2O, THF), derived from chromium hexacarbonyl. gives 2-pyranylidene-chromium complexes in good yields. The conjugated ene-carbonyl-vinylidene complex is a key intermediate to these Fischer-type oxacarbene complexes. In contrast, beta-ethynyl alpha,beta-unsaturated ketones react with Cr(CO)(5)(THF) to give (2-furyl)carbene complexes via nucleophilic attack of the carbonyl oxygen atom to the intermediate n-alkyne-chromium complexes, Some chemical transformation, such as [4 + 2] type cyclization of 2-pyranylidene complexes with alkynes and aldehyde formation from (2-furyl)carbene complexes, has also been described. (C) 2002 Elsevier Science B.V. All rights reserved.

リンク情報
DOI
https://doi.org/10.1016/S0022-328X(01)01328-6
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000174467200030&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/S0022-328X(01)01328-6
  • ISSN : 0022-328X
  • Web of Science ID : WOS:000174467200030

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