Process for Preparing Optically Active Diphosphanes
申请人:Jaekel Christoph
公开号:US20080242893A1
公开(公告)日:2008-10-02
The present invention relates to a process for preparing optically active bisphosphinylalkanes from the correspondingly substituted, racemic 1,2-diols. The optically active bisphosphinylalkanes which can be obtained in this way are suitable as ligands for preparing chiral transition metal catalysts.
Nonaqueous electrolyte solution and lithium secondary battery using same
申请人:Abe Koji
公开号:US08568932B2
公开(公告)日:2013-10-29
The present invention provides a nonaqueous electrolytic solution in which an electrolyte salt is dissolved in a nonaqueous solvent, containing 0.01% to 30% by weight of a 1,2-cyclohexanediol derivative having a specific structure; and a lithium secondary battery using the nonaqueous electrolytic solution. The lithium secondary battery exhibits excellent battery characteristics such as electrical capacity, cycle property, and storage property and can maintain excellent long-term battery performance.