A new synthesis of N-sulfinylamines via β-elimination of chloroform from trichloromethanesulfinamides
摘要:
The synthesis of various N-monosubstituted trichloromethanesulfinamides by two alternative and novel procedures is described. All these compounds have been found to undergo base-induced elimination of chloroform with formation of the corresponding N-sulfinylamines. Reaction proceeds smoothly under mild conditions. Copyright (C) 1996 Published by Elsevier Science Ltd
N-Heterocyclic Carbene Catalysis: Enantioselective Formal [2+2] Cycloaddition of Ketenes and N-Sulfinylanilines
作者:Teng-Yue Jian、Lin He、Cen Tang、Song Ye
DOI:10.1002/anie.201102488
日期:2011.9.19
Sultam of swing: Both enantiomers of 1,2‐thiazetidin‐3‐one oxides were obtained in very good yields with excellent enantioselectivities when using N‐heterocyclic carbene catalysts (see scheme; M.S.=molecular sieves, TBS=tert‐butyldimethylsilyl). The products were easily converted into 3‐oxo‐β‐sultams, α‐mercapto amides, and β‐mercapto amines through oxidation or reduction.
摇摆的结果:使用N杂环卡宾催化剂时,1,2-噻嗪丁-3-氧化物的两种对映体均以非常高的收率获得,并具有出色的对映选择性(参见方案; MS =分子筛,TBS =叔丁基二甲基甲硅烷基)。产物可以通过氧化或还原轻松地转化为3-氧代-β-杜马酰胺,α-巯基酰胺和β-巯基胺。
Cycloaddition von N-sulfinylaminen an ketene
作者:H. Beecken、F. Korte
DOI:10.1016/s0040-4020(01)99310-x
日期:1962.1
Aromatic and aliphatic N-sulphinyl amines add smoothly to diphenyl and biphenylene ketene forming substituted 1,2-thiazetidinone-(3)-oxides-(1). An addition of ketene itself to N-sulphinyl cyclohexyl amine can be concluded from secondary products only.
Synthesis of sulfinamides <i>via</i> photocatalytic alkylation or arylation of sulfinylamine
作者:Ming Yan、Si-fan Wang、Yong-po Zhang、Jin-zhong Zhao、Zhuo Tang、Guang-xun Li
DOI:10.1039/d3ob01782f
日期:——
Sulfinamides are a versatile class of compounds that find applications in both organic synthesis and pharmaceuticals. Here we developed an efficient photocatalytic approach for the convenient preparation of sulfinamides. Commercially available potassiumtrifluoro(organo)borates and readily available sulfinyl amines are rationally used and converted to a series of alkyl or aryl sulfinamides in moderate to high
Iron-Catalyzed Photochemical Synthesis of Sulfinamides from Aliphatic Hydrocarbons and Sulfinylamines
作者:Guang-Da Xia、Run Li、Long Zhang、Yi Wei、Xiao-Qiang Hu
DOI:10.1021/acs.orglett.4c00612
日期:——
An iron-catalyzed photochemical sulfinamidation of hydrocarbons with N-sulfinylamines has been developed. The merger of ligand-to-metal charge transfer (LMCT) of FeCl3 with hydrogen atom transfer (HAT) process is the key for the generation of alkyl radicals from hydrocarbons, and the resultant alkyl radicals were readily trapped by N-sulfinylamines to produce structurally diverse sulfinamides. Contrary
Polymeric nonlinear optical materials from anisotropic dipolar monomers
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0430139A2
公开(公告)日:1991-06-05
The present invention describes a polymeric nonlinear optical (NLO) material in which NLO active groups are integral to the polymer chain and a process for producing the NLO material. The polymeric NLO material has recurring monomeric units of the following formula:
where X is a divalent electron-donating group, Ar is a conjugating group, A is a divalent electron-withdrawing group and n is an integer of at least 3. The NLO material may be, for example, a poly(benzene sulphonamide) or a poly(p-benzamide). The polymeric material is prepared by applying a stress to the NLO polymer to induce orientation of the NLO active groups in the polymer such that the material exhibits nonlinear optical capabilities.