Synthesis and application of new chiral bidentate phosphine, 2,7-di-tert-butyl-9,9-dimethyl-4,5-bis(methylphenylphosphino)xanthene

New optically active bidentate phosphines, ( S, S)- and ( R, R)-2,7-di-tert-butyl-9,9-dimethyl-4,5-bis(methylphenylphosphino)xanthenes ( (S,S)- 1 and (R,R)- 1 ), were prepared through resolution of the corresponding phosphine oxides using ( R, R)-(−)-dibenzoyl-tartaric acid and a preliminary experim...

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Published inTetrahedron letters Vol. 38; no. 52; pp. 8961 - 8964
Main Authors Hamada, Yasumasa, Matsuura, Fumiyoshi, Oku, Makoto, Hatano, Keiichiro, Shioiri, Takayuki
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 29.12.1997
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Summary:New optically active bidentate phosphines, ( S, S)- and ( R, R)-2,7-di-tert-butyl-9,9-dimethyl-4,5-bis(methylphenylphosphino)xanthenes ( (S,S)- 1 and (R,R)- 1 ), were prepared through resolution of the corresponding phosphine oxides using ( R, R)-(−)-dibenzoyl-tartaric acid and a preliminary experiment on asymmetric synthesis using an allyl substrate proved the utility of the new bidentate phosphines. Graphic
ISSN:0040-4039
1873-3581
DOI:10.1016/S0040-4039(97)10363-X