PROCESS FOR PRODUCTION OF BIS-QUATERNARY AMMONIUM SALT, AND NOVEL INTERMEDIATE
申请人:Okamoto Kuniaki
公开号:US20120130107A1
公开(公告)日:2012-05-24
Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof.
Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R
1
's and T are as described in claim
1
) with a tertiary amine represented by a general formula [2] (in the formula, definitions of R
3
to R
5
are as described in claim
1
), and a disulfonic acid ester represented by a general formula [1′] (in the formula, two R
16
's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5).
Utilization of optically active secondary phosphine–boranes: synthesis of P-chiral diphosphines and their enantioinduction ability in rhodium-catalyzed asymmetric hydrogenation
作者:Tsuneo Imamoto、Yumi Horiuchi、Eri Hamanishi、Satoshi Takeshita、Ken Tamura、Masashi Sugiya、Kazuhiro Yoshida
DOI:10.1016/j.tet.2015.05.088
日期:2015.9
have been used for the synthesis of P-chiral diphosphines and/or their borane complexes. The enantiopure borane complex of 1,2-bis(tert-butylmethylphosphino)ethane (t-Bu-BisP∗) was prepared in high yield from the secondary phosphine–borane and 1,2-dichloroethane. A mono-chelated Rh-complex of t-Bu-MiniPHOS was prepared and its catalytic activity was examined in the asymmetric hydrogenation of some representative
Metathetical Reactions of Silver Salts in Solution. II. The Synthesis of Alkyl Sulfonates<sup>1</sup>
作者:William D. Emmons、Arthur F. Ferris
DOI:10.1021/ja01105a509
日期:1953.5
BLOCK, DIRK;COENEN, HEINZ HUBERT;STOCKLIN, GERHARD, J. LABEL. COMPOUNDS AND RADIOPHARM., 24,(1987) N 9, 1029-1042
作者:BLOCK, DIRK、COENEN, HEINZ HUBERT、STOCKLIN, GERHARD
DOI:——
日期:——
Process for production of bis-quaternary ammonium salt, and novel intermediate
申请人:Okamoto Kuniaki
公开号:US08716513B2
公开(公告)日:2014-05-06
Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof.
Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R1's and T are as described in claim 1) with a tertiary amine represented by a general formula [2] (in the formula, definitions of R3 to R5 are as described in claim 1), and a disulfonic acid ester represented by a general formula [1′] (in the formula, two R16's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5).