Reactions of transiently formed nitrilium phosphanylide chromium, molybdenum, and tungsten complexes with heterocumulenes

✍ Scribed by Rainer Streubel; Christoph Neumann

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 144 KB
• Volume: 13
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/hc.1108

✦ Synopsis

Abstract

Thermal decomposition of the 2H‐azaphosphirene metal complexes 1a–c in the presence of 1‐piperidinecarbonitrile and heterocumulene derivatives 3, 4, and 5 yielded the Δ^3^‐1,3,2‐oxazaphospholene complexes 6c and the Δ^3^‐1,3,2‐thiazaphospholene complexes 7a–c as isolable products; the latter represent the first complexes of this ring system. It is remarkable that these trapping reactions of the nitrilium phosphanylide complexes 2a–c, which were formed as reactive intermediates, proceeded with high regio‐ and substrate selectivities. The complexes were isolated by column chromatography and characterized by elemental analysis, NMR spectroscopy and mass spectrometry. © 2002 John Wiley & Sons, Inc. Heteroatom Chem 13:72–76, 2002; DOI 10.1002/hc.1108