CYCLOBUTENEDIONE DERIVATIVE, NONAQUEOUS ELECTROLYTIC SOLUTION, AND LITHIUM ION SECONDARY BATTERY
申请人:NEC Corporation
公开号:US20170210764A1
公开(公告)日:2017-07-27
A nonaqueous electrolytic solution comprising a cyclobutenedione derivative represented by the following general formula (1):
wherein R
1
represents an organic group having a carbon-carbon double bond or a carbon-carbon triple bond in its structure, and R
2
represents an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, a thioalkyl group having 1-6 carbon atoms, a substituted or unsubstituted thioaryl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.
Cyclobutenedione derivative, nonaqueous electrolytic solution, and lithium ion secondary battery
申请人:NEC Corporation
公开号:US10374258B2
公开(公告)日:2019-08-06
A nonaqueous electrolytic solution comprising a cyclobutenedione derivative represented by the following general formula (1):
wherein R1 represents an organic group having a carbon-carbon double bond or a carbon-carbon triple bond in its structure, and R2 represents an alkyl group having 1-6 carbon atoms, an alkoxy group having 1-6 carbon atoms, a thioalkyl group having 1-6 carbon atoms, a substituted or unsubstituted thioaryl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group.
Ring Expansion of 4-Alkynylcyclobutenones. Synthesis of Enantiomerically Pure Pyranoquinones from 4-(4-Oxo-1,6-enynyl)-4-hydroxycyclobutenones and 4-(4-Oxo-1,6-dialkynyl)-4-hydroxycyclobutenones
作者:Yifeng Xiong、Haiji Xia、Harold W. Moore
DOI:10.1021/jo00125a037
日期:1995.10
Thermolysis of 4-(4-oxo-1,6-enynyl)-4-hydroxycyclobutenones 23 in refluxing toluene provides an enantiospecific synthesis of pyranoquinones 27. The 4-methoxy analog 32 was shown to give a quinone methide 35 and ultimately the trimer 36.
Synthesis of the bicyclo[3.2.0] ring systems from 4-allylcyclobutenones. Intramolecular ketene/alkene cycloadditions
作者:Simon L. Xu、Haiji Xia、Harold W. Moore
DOI:10.1021/jo00021a025
日期:1991.10
A general synthesis of bicyclo[3.2.0]heptenones from 4-allylcyclobutenones is described. The rearrangement is envisaged to involve an electrocyclic ring opening of the cyclobutenone and subsequent intramolecular 2 + 2 cycloaddition of the resulting vinylketene to the nonconjugated allylic alkene moiety. This method is particularly suitable for the synthesis of highly substituted derivatives since the regiochemistry of the substitution pattern is conveniently controlled. The scope of the rearrangement and the mechanism are discussed.
Synthesis of p-chlorophenols (and -naphthols) from the thermal rearrangement of 4-chlorocyclobutenones
作者:Simon L. Xu、Harold W. Moore
DOI:10.1021/jo00027a057
日期:1992.1
A systematic study of the reaction of 4-hydroxycyclobutenones with thionyl chloride is reported. A useful model evolves from this study which allows the prediction of the site of chlorination for unsymmetrical examples. The chlorination is envisaged to involve the corresponding homoaromatic carbocation, and the site of chlorination takes place preferentially at the position substituted with the greater cation-stabilizing substituent. Specifically, this follows the general order of allyl > benzyl > alkyl > propargyl. The 4-chlorocyclobutenones prepared in this study were shown to be useful synthetic precursors to highly substituted chlorophenols and chloronaphthols.