Kazan Scientific Center, A. E. Arbuzov Institute of Organic and Physical Chemistry, Russian Academy of Sciences, Arbuzov street 8, Kazan 420088, Russian Federation.
Inorg Chem. 2010 Jun 21;49(12):5407-12. doi: 10.1021/ic902564n.
The first representative of 1,5-diaza-3,7-diphosphacyclooctanes (1) with chiral L-menthyl substituents on the phosphorus atoms was obtained by condensation of L-menthylphosphine with formaldehyde and p-toluidine. This optically active cyclic bisphosphine readily forms a stable P,P-complex with borane (2) and P,P-chelate complexes with platinum(II) (3) and palladium(II) dichloride (4). The structure of the bisphosphine 1 in solution was elucidated by employing a variety of 1D/2D NMR correlation experiments, and the molecular structure of complex 3 was studied by X-ray crystallography.
具有手性 L-薄荷基取代基的 1,5-二氮杂-3,7-二膦环辛烷（1）的第一个代表物是通过 L-薄荷基膦与甲醛和对甲苯胺缩合得到的。这种手性环状双膦很容易与硼烷（2）形成稳定的 P，P-配合物，并与铂（II）（3）和氯化钯（II）（4）形成 P，P-螯合配合物。通过使用各种 1D/2D NMR 相关实验阐明了溶液中双膦 1 的结构，并通过 X 射线晶体学研究了配合物 3 的分子结构。
