Formation of cyclic carbonates in the reactions of 1,2-glycols with oxalyl chloride.
作者:Taisuke ITAYA、Takehiko IIDA、Hiromi EGUCHI
DOI:10.1248/cpb.41.408
日期:——
Oxalyl chloride reacts with a wide range of 1, 2-glycols in the presence of triethylamine to produce 1, 3-dioxolan-2-ones together with 1, 4-dioxane-2, 3-diones; the ratio of the products largely depends on the structure of the 1, 2-glycol. The formation of the cyclic carbonates may be rationalized in terms of stereoelectronically controlled cleavage of the tetrahedral intermediates.
Compound and Electrolyte of Lithium Secondary Battery Containing the Same
申请人:SK Innovation Co., Ltd.
公开号:US20160087309A1
公开(公告)日:2016-03-24
Provided are a novel compound, an electrolyte for a lithium secondary battery containing the same, and a lithium secondary battery containing the electrolyte for a lithium secondary battery according to the present invention. The electrolyte for a secondary battery according to the present invention may have significantly excellent high-temperature stability, low-temperature discharge capacity, and life cycle characteristics.
Cyclocondensation of oxalyl chloride with 1,2-glycols
作者:Takehiko Iida、Taisuke Itaya
DOI:10.1016/s0040-4020(01)81546-5
日期:1993.1
Oxalyl chloride reacts with a wide range of acyclic 1,2-glycols 1 in the presence of triethylamine to produce 1,3-dioxolan-2-ones 3 together with 1,4-dioxane-2,3-diones 2. Ethylene glycol (1d), monosubstituted ethylene glycols 1e, j-1, and erythro-1,2-disubstituted ethylene glycols 1f, m,o provide the cyclic carbonates 3 as the minor products, while the threo-compounds 1g, i, n,p,q and pinacol (1h) afford 3 as the main products. The formation of 3 may be rationalized in terms of stereoelectronically controlled cleavage of the conjugate base 17- of the tetrahedral intermediates. The rate for the conformational change of 17- into 18- and the equilibrium constant between these conformers are proposed to be the major factors affecting the reaction pattern.
Itaya, Taisuke; Iida, Takehiko, Journal of the Chemical Society. Perkin transactions I, 1994, # 13, p. 1671 - 1672