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Stereospecific Construction of a trans-1,4-Diphosphacyclohexane Skeleton

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posted on 2020-04-03, 17:57 authored by Yasuhiro Morisaki, Hiroaki Imoto, Yuko Ouchi, Yuuya Nagata, Yoshiki Chujo
trans-1,4-Diphosphacyclohexanes were successfully synthesized by the stereospecific intramolecular coupling reaction of the optically active bisphosphine. This is a new route for the construction of the trans-1,4-diphosphacyclohexane skeleton. A cis isomer was also prepared along with the trans isomer from a mixture of rac- and meso-bisphosphines. The coordinated boranes were easily removed to afford the corresponding 1,4-diphosphacyclohexanes.

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