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(+)-(3S,4S)-Tetrahydrofuran-3,4-diyl bis(diphenylphosphinite) [(+)-diphin] has been synthesized and its efficiency as a ligand in asymmetric hydrogenation, hydrocyanation and hydroformylation compared with closely related diphosphine, diphosphinite and diphosphite ligands.
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Jackson et al. (1982) studied this question.
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