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Stepwise Expansion of a Cp* Ring at Pentelidene Complexes and Stereoselective Formation of Triphosphines
Author(s) -
Scheer Manfred,
Kuntz Christian,
Stubenhofer Markus,
Zabel Manfred,
Timoshkin Alexey Y.
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200904827
Subject(s) - stereoselectivity , ring (chemistry) , chemistry , content (measure theory) , spectroscopy , stereochemistry , information retrieval , medicinal chemistry , computer science , organic chemistry , catalysis , mathematics , physics , mathematical analysis , quantum mechanics
One at a time : Stepwise opening and final removal of the η 1 ‐bound Cp* substituents in the bridged pentelidene complexes [Cp*E{W(CO) 5 } 2 ] (E=P, As) occurs by the reaction with primary phosphines. Not only novel diphospha‐ and arsaphosphanorbornenes are obtained, but also diastereomerically pure complexed triphosphines. All reaction steps were monitored by NMR spectroscopy, and compounds structurally characterized.