Sulfonate leaving groups include a cation chelating moiety, e.g. a polyether or crown ether. The chelating moiety stabilizes the sulfonate leaving group by forming a complex with a cation of a cation-nucleophile combination. The stabilized leaving group is more easily displaced under many conditions than are standard arylsulfonate leaving groups such as the toxyl group. The chelating moiety also favors certain cations depending on the identity of the moiety thereby enhancing the reaction rate with nucleophilic salts containing the preferred cation. Use of the inventive leaving groups results in improved yields, decreased reaction times and improved product purity.
Anomalous behavior of tosylates in elimination reactions
作者:Carl L. Bumgardner、John R. Lever、Suzanne T. Purrington
DOI:10.1021/jo01292a050
日期:1980.2
Selective etherification
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0379968B1
公开(公告)日:1995-01-11
NONAQUEOUS ELECTROLYTIC SOLUTION AND NONAQUEOUS-ELECTROLYTE BATTERY EMPLOYING THE SAME
申请人:MITSUBISHI CHEMICAL CORPORATION
公开号:US20150024284A1
公开(公告)日:2015-01-22
The present invention is to provide: a nonaqueous-electrolyte battery excellent in terms of safety during overcharge and high-temperature storability; and a nonaqueous electrolytic solution which gives the battery. The present invention relates to a nonaqueous electrolytic solution comprising an electrolyte and a nonaqueous solvent, wherein the nonaqueous electrolytic solution comprises at least one of specific compounds.