✦ LIBER ✦

Novel Reactions of Phosphaalkynes in the Coordination Sphere of tert-Butylimido- vanadium(V) Complexes: A Simple Synthesis of 3-Aza-1,2,4,6-tetraphosphaquadricyclanes and 1,3,5-Triphosphabenzenes

✍ Scribed by Frank Tabellion; Anja Nachbauer; Stefan Leininger; Christoph Peters; Fritz Preuss; Manfred Regitz

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 107 KB
Volume: 37
Category: Article
ISSN: 0044-8249
DOI: 10.1002/(sici)1521-3773(19980518)37:9<1233::aid-anie1233>3.0.co;2-x

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✦ Synopsis

A small variation in the vanadium reagent leads to a completely different product: The cyclooligomerization of phosphaalkynes 2 with tBuN=VCl ⋅DME (DME=1,2-dimethoxyethane) proceeds with incorporation of the imido fragment to give the azatetraphosphaquadricyclanes 1. In contrast, with the corresponding vanadium compound containing no Lewis base this fragment is not incorporated, and the 1,3,5-triphosphabenzenes 3 are obtained.