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Bidentate phosphines of heteroarenes: 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene

✍ Scribed by Stefan Hillebrand; Joachim Bruckmann; Carl Krüger; Matthias W. Haenel


Book ID
103398674
Publisher
Elsevier Science
Year
1995
Tongue
French
Weight
224 KB
Volume
36
Category
Article
ISSN
0040-4039

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New optically active bidentate phosphines, (S,S)-and (R,R)-2,7-di-tertbutyl-9,9-dirnethyl-4,5-bis(methylphenylphosphino)xanthenes ((S, S)-I and (R, R)-I), were prepared through resolution of the corresponding phosphine oxides using (R, R)-(-)-dibenzoyl-tartaric acid and a preliminary experiment on a