Synthesis and Characterization of O,O-Dimethyl-N-(2,2,2-trichloro-1-arylaminoethyl) Phosphoramidothioates
摘要:
Several novel trichloromethyl-containing O,O-dimethyl phosphoramidothioate derivatives have been synthesized by the reaction of O, O-dimethyl phosphoramidothioate with chloral imines. The latter were prepared in good yields by refluxing the dichloroethane solution of chloral and substituted anilines using 3 angstrom molecular sieves as dehydrating agent. Structures of title compounds were confirmed by IR, H-1 NMR, P-31 NMR, and FT-MS studies.
Synthesis and characterization of chiral 1,2-diamines from 5-oxo-pyrrolidine-(S)-2-carboxylic acid
作者:Uwe Köhn、Andrea Schramm、Florian Kloß、Helmar Görls、Evelyn Arnold、Ernst Anders
DOI:10.1016/j.tetasy.2007.07.012
日期:2007.7
Unsymmetrical chiral secondary vicinal diamines were synthesized by applying a modified three-step reaction. The key step in this sequence is a primary amine mediated ring opening reaction of a diastereomeric oxazolidinone derivative. A possible mechanism for this step is described. (c) 2007 Elsevier Ltd. All rights reserved.
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