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Condensation of lithium diphenylphosphonium diylides with carbonic anhydride derivatives. A new one-pot synthesis of α,β-unsaturated anilides and amidines.

✍ Scribed by Henri-Jean Cristau; Anne Perraud-Darcy; Yves Ribeill

Book ID: 104215742
Publisher: Elsevier Science
Year: 1992
Tongue: French
Weight: 295 KB
Volume: 33
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)79059-9

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✦ Synopsis

Lithiam diphenylphosphoniam diylides readily attack phenyliscqunate and dic~lohexykarixniiimide The formed stmi-stabilised ylides bear a metallated amide or amidinefunction llwir ase in situ as Wutig reagents towar& aldehydes and ketones is shown to be a new one-pot, E-stereosekctiw synthesis for a,&ansaturated anilidea and amidiaes. Moreowr, the corrqkmding phosphon&n salts were isolated

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