Synthesis and Downstream Reactions of 2-(Triphenylphosphino)-4,5-dicarbomethoxy-1,3-diselenole Tetrafluoroborate: X-ray Crystal Structure of a Nitroso Derivative of a 2-Ylidene-1,3-diselenole Stabilized by an Intramolecular O···Se Interaction
作者:Antony Chesney、Martin R. Bryce、Michael A. Chalton、Andrei S. Batsanov、Judith A. K. Howard、Jean-Marc Fabre、Laurent Binet、Saïd Chakroune
DOI:10.1021/jo951979n
日期:1996.1.1
The title 1,3-diselenole Wittig reagent 9 has been synthesised by a new, efficient route from readily-available starting materials and reacted with a variety of functionalized aldehydes to form the corresponding 2-ylidene-1,3-diselenones 12 in respectable yields. X-ray analysis of a nitrosated derivative 14e, prepared by the reaction of 12e with isoamyl nitrite, has provided the first direct evidence