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Phosphanalkylene, 52. Umsetzung von [1‐(Trimethylsilyl)alkyliden]triphenylphosphoranen mit Kohlendioxid und Folgereaktionen
Author(s) -
Bestmann Hans Jürgen,
Dostalek Roman,
Zimmermann Reiner
Publication year - 1992
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19921250916
Subject(s) - chemistry , trimethylsilyl , silylation , thermal decomposition , stereoselectivity , medicinal chemistry , carbon dioxide , organic chemistry , decomposition , catalysis
Phosphane Alkylenes, 52 [1] . – Reactions of [1‐(Trimethylsilyl)alkylidene]triphenylphosphoranes with Carbon Dioxide 2‐(Triphenylphosphoranylidene) carboxylic acid esters 6 have been synthesized from 1‐(trimethylsilylalkylidene)phosphoranes 4 and carbon dioxide. The reactions of the ylides 6 with aldehydes 9 lead to α,β‐unsaturated silyl esters 10 in good yields and with high ( E ) stereoselectivity. Thermolysis of 6d affords (oxovinylidene)triphenylphosphorane ( 7 ).