首页   按分类浏览 期刊浏览 卷期浏览 CONJUGATE ADDITION OF A PHOSPHORUS YLIDE TO 3-CYANOCHROMONE
CONJUGATE ADDITION OF A PHOSPHORUS YLIDE TO 3-CYANOCHROMONE

 

作者: ChristopherD. Gabbutt,   B.Mark Heron,   MichaelB. Hursthouse,   K.M. Abdul Malik,  

 

期刊: Phosphorus, Sulfur, and Silicon and the Related Elements  （Taylor Available online 2000）
卷期: Volume 166, issue 1  

页码: 99-109

 

ISSN:1042-6507

 

年代: 2000

 

DOI:10.1080/10426500008076534

 

出版商: Taylor & Francis Group

 

关键词: 3-Cyanochrornone;methylenetriphenylphosphorane;conjugate addition;X-ray crystallography;variable temperature1H NMR spectroscopy

 

数据来源: Taylor

 

摘要:

Reaction of 3-cyanochromone with methylenetriphenylphosphorane yields the stabilized ylide (4) by way of a conjugate addition and subsequent ring opening. Variable temperature1H NMR spectroscopy indicates that this ylide undergoes rapid conformational interconversion at ambient temperature. X-ray crystallography established that (4) exists as the (E) isomer in the solid state.

 

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