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Beiträge zur Chemie des Phosphors, 78: 1,2,3‐Triphenyltriphosphan
Author(s) -
Baudler Marianne,
Koch Dieter,
Carlsohn Burkhard
Publication year - 1978
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.19781110339
Subject(s) - chemistry , disproportionation , diastereomer , phosphorus , stereochemistry , organic chemistry , catalysis
Contributions to the Chemistry of Phosphorus, 78: 1,2,3‐Triphenyltriphosphane Among the disproportionation products of 1,2‐diphenyldiphosphane ( 1 ), 1,2,3‐triphenyltriphosphane ( 2 ) could be enriched up to the maximum concentration of ≈50% with respect to the total phosphorus. 2 was identified by the 31 P{ 1 H} NMR spectrum that exhibits, in the region of openchain triphosphanes, two A 2 B and one ABC spin system for the three diastereomers, of which the NMR parameters are reported. Contrary to results given in the literature, 2 is not stable at room temperature, but disproportionates to give lower and higher homologues of the series H(PPh) n H as well as cyclic phenylphosphanes, especially (PPh) 5 .