在5.0°C的条件下,研究了芳基氯硫代甲酸酯(7,YC 6 H 4 OC(S)Cl)与苯胺(XC 6 H 4 NH 2)在乙腈中的氨解作用。该速率比芳基氯甲酸酯(6,YC 6 H 4 OC(O)Cl)的相应反应的速率慢。此速率序列是,对氯甲酸烷基酯(反向1 - 4)在水中,为此,速率限制形成四面体中间体,T的±,进行了预测。基于较大的负交叉相互作用常数ρXY= -0.77,反应性-选择性原理失败,涉及氘化亲核试剂(XC 6 H 4 ND 2)的正常k H / k D值,并且低ΔH ≠与大的负Δ小号≠对于标题反应系列,提出了具有四元氢键的环状过渡态(11)的协同机理。已经显示出,对于6和7的氨解,溶剂从水变为乙腈引起从逐步到一致的机械变化。
Convenient Synthesis of Unsymmetrical N,N′-disubstituted Thioureas in Water
作者:Zhengyi Li、Yuan Chen、Yue Yin、Zhiming Wang、Xiaoqiang Sun
DOI:10.3184/174751916x14760947474916
日期:2016.11
and convenient two-step method has been developed and used to synthesise 25 (4 of which are novel) unsymmetrical N,N′-disubstituted thioureas in water. Alkylamines or variously substituted arylamines reacted smoothly with phenyl chlorothionoformate at room temperature to form thiocarbamates, which were then reacted with another alkyl- or arylamine in water at reflux to afford the unsymmetrical N,N′-disubstituted
Disclosed are small molecule inhibitors of deubiquitinating enzymes (DUBs), and methods of using them. Certain compounds display a preference for specific ubiquitin specific proteases (USPs).
Preparation of Aryl Isothiocyanates via Protected Phenylthiocarbamates and Application to the Synthesis of Caffeic Acid (4-Isothiocyanato)phenyl Ester
作者:Xuechun Zhang、Young K. Lee、James A. Kelley、Terrence R. Burke
DOI:10.1021/jo000139s
日期:2000.9.1
RIECHE; HILGETAG; MARTINI, Archiv der Pharmazie, 1961, vol. 294 /66, p. 201 - 209
作者:RIECHE、HILGETAG、MARTINI、PHILIPPSON
DOI:——
日期:——
Fungicidal activity of phenyl N-(4-substituted-phenyl)thionocarbamates.
作者:Martha Albores-Velasco、John Thorne、Ralph L. Wain
DOI:10.1021/jf00056a054
日期:1995.8
Thirteen phenyl N-(4-substituted-phenyl)thionocarbamates [(4-X-C6H4)NHC(S)OC6H5] were synthesized, and their activities as spore germination inhibitors of Alternaria brassicicola, Botrytis cinerea, Septoria nodorum, and Uromyces viciae-fabae and as protectants against Puccinia recondita on wheat seedlings were determined. High fungicidal activity was found in thionocarbamates substituted with electron-withdrawing groups or the OH group. Results are discussed on the basis of the physicochemical properties of the thionocarbamates.