A process for separating the (d/l) and (meso) diastereoisomers of bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] comprising converting the mixture of diastereoisomers of bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene] to a mixture of the corresponding diastereoisomers of diphosphine disulphide or dioxide, then in separating the two diastereoisomers in dioxide or disulphide form.

Процесс для отделять (d/l) и diastereoisomers (meso) bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene ] состоя из преобразовывающ смесь diastereoisomers bis-[1-phospha-2,3-diphenyl-4,5-dimethylnorbornadiene ] к смеси соответствуя diastereoisomers дисульфида или двуокиси diphosphine, после этого в отделять 2 diastereoisomers в форме двуокиси или дисульфида.

 
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