Tungsten Wittig reagents: an efficient synthesis of α-functionalised tri-and tetrasubstituted alkenes

A Aguero, J Kress, JA Osborn

文献索引：Aguero, A.; Kress, J.; Osborn, J. A. Journal of the Chemical Society, Chemical Communications, 1986 , # 7 p. 531 - 533

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被引用次数: 30

摘要

The Wittig reaction by which an organic carbonyl function is transformed into an alkene by means of a phosphorus ylide is not generally applicable to less reactive carbonyl groups as in esters, lactones, or amides.1 Partly, this restriction has been ... Table 1. Wittig-type reactions using W[=C(CH2)3CHz](OCH2But)2X2 (X = OCH,But, CI, Br, or I).a ... 25 "C, 3 h 82 o/o 25 "C, 24 h 85 O/O 25 "C, 36 h 85 '/o ... (EtO)MeC= 0 ( MezN )Me C=O