The reaction of PhCHNCH2CH2NMe2 with [PtCl2S2] (S = SMe2 or dmso) produces [PtCl2(PhCHNCH2CH2NMe2)] (1) in which the imine acts as a bidentate [N,N′] ligand. The cyclometallated [C,N,N′] platinum(II) complex [PtCl(C6H4CHNCH2CH2NMe2)] (2) has been obtained by refluxing a methanol solution of complex1 in the presence of base; both complexes1 and 2 have been characterized crystallographically. The cyclometallation
PhCH NCH 2 CH 2 NMe 2与[PtCl 2 S 2 ](S = SMe 2或dmso)产生[PtCl 2(PhCH NCH 2 CH 2 NMe 2)](1),其中亚胺 充当双齿[N,N'] 配体。环金属化的[C,N,N']铂(II)配合物[PtCl(C 6 H 4 CH NCH 2 CH 2 NMe 2)](2)已通过回流甲醇在碱存在下的配合物1的溶液;配合物1和2都已经在晶体学上进行了表征。在可变温度和压力下,对环金属化过程进行了动力学研究,该过程是加入碱的函数。甲醇 其他 乙醇解决方案。在所有情况下,实际的C-H键激活之前都是Z到E的异构化。亚胺; 通过质子NMR检测该物质也已经实现。当添加的“外部”碱(NaCH 3 CO 2)实际上可以与起始原料反应形成环戊二烯时,与这两个过程相关的动力学,热和重活化参数表明反应的反应机理不同。新的acetato配合物,可以使反应发生在分子内。
Methods for inhibiting conversion of choline to trimethylamine (TMA)
申请人:The Procter & Gamble Company
公开号:US11246844B2
公开(公告)日:2022-02-15
A method of inhibiting the conversion of choline to trimethylamine (TMA) and lowering TMAO by providing a composition comprising a compound set forth in Formula (I):
New Reactions of IBX: Oxidation of Nitrogen- and Sulfur-Containing Substrates To Afford Useful Synthetic Intermediates
作者:K. C. Nicolaou、Casey J. N. Mathison、Tamsyn Montagnon
DOI:10.1002/anie.200352076
日期:2003.9.5
Stereocontrolled synthesis of N-vinyl-, N-(1'-propenyl)-, and N-unsubstituted-.beta.-lactams from 2-aza-1,3-butadienes via the Staudinger reaction
作者:Gunda I. Georg、Ping He、Joydeep Kant、Zhin Jun Wu
DOI:10.1021/jo00073a042
日期:1993.10
2-Aza-1,3-butadienes 2 and 5 were synthesized in good yields and on a large scale. Reaction of 2 and 5 with acid chlorides in the presence of triethylamine (Staudinger reaction) resulted in the high-yielding formation of N-vinyl- and N-(1'-propenyl)-beta-lactams. Excellent cis-stereoselectivity was observed in the reaction of 2-aza-1,3-butadienes 2 and 5 with Bose-Evans ketenes and Sheehan ketenes, whereas reaction with a Moore ketene gave, as expected, a trans beta-lactam. N-Formyl, N-vinyl, and N-(1'-propenyl) groups at the beta-lactam nitrogen could be cleaved oxidatively in one step and in good yields by treatment with potassium permanganate. It was also found that the N-vinyl group can be removed successfully under hydrolytic, conditions to yield N-unsubstituted-beta-lactams.
Witek, Stanislaw; Bielawska, Alicja; Bielawski, Jacek, Polish Journal of Chemistry, 1982, vol. 56, # 1, p. 207 - 212
作者:Witek, Stanislaw、Bielawska, Alicja、Bielawski, Jacek