Lithium-<i>N</i>-lithiomethyldithiocarbamate: Neue<i>N</i>-Alkylaminomethylanion-Äquivalente; III<sup>1</sup>. 2-Imidazolidinthione and 1,2-Diamine durch eletrophile Aminoalkylierung mit Iminen und Immoniumsalzen
作者:Hubertus Ahlbrecht、Christine Schmitt
DOI:10.1055/s-1994-25556
日期:——
Lithium N-Lithiomethyldithiocarbamates: New N-Alkylaminomethyl Anion Equivalents; III.1 2-Imidazolidinethiones and 1, 2-Diamines via Electrophilic Aminoalkylation with Imines and Iminium Salts Treatment of lithium N-butyl-N-lithiomethyldithiocarbamates 3 with various aldimines and ketimines 4 leads to 1,3,4, 4-tetrasubstituted 2-imidazolidinethiones 6. If iminium salts 7 are used as electrophiles, unsymmetrically substituted 1,2-diamines 8 are obtained.
Novel and facile synthesis of fluorinated enamino ketones and amino alcohols
作者:Jan A Barten、Alexander A Kadyrov、Enno Lork、Gerd-Volker Röschenthaler
DOI:10.1016/s0022-1139(02)00102-1
日期:2002.7
react via their enamine tautomers with terminal perfluorinated epoxides, e.g. hexafluoropropene oxide to produce fluorinated enamino ketones or imino ketones. In contrast, internal perfluorinated linear epoxides and one cyclic epoxide yield intermediate imino alcohols, which in one case added hexafluoroacetone, furnishing a new imino diol investigated by X-ray diffraction.
Meier, Herbert; Saul, Klaus; Jacob, Dominic, Liebigs Annalen der Chemie, 1993, # 3, p. 313 - 320
作者:Meier, Herbert、Saul, Klaus、Jacob, Dominic
DOI:——
日期:——
Simple access to novel β-hydroxy-β-trifluoromethyl imines
作者:Jan Alexander Barten、Kazumasa Funabiki、Gerd-Volker Röschenthaler
DOI:10.1016/s0022-1139(01)00500-0
日期:2002.1
Selected imines reacted with three different trifluoromethyl group-containing ketones in a non-catalyzed manner at ambient temperature to give the corresponding beta-hydroxy-beta-trifluoromethyl imines in good to excellent yields. With 1,1,1-trifluoroacetone a 1:1 and a 2:1 reaction product was obtained. The reduction of 2-isopropylimino-4-phenyl-5,5,5-trifluoropentan-4-ol led to a 5:1 diastereomeric mixture of the corresponding amine, whose dominant form was found to be (2S, 4R) 4-isopropylamino-4-phenyl-2-trifluoromethyl-butan-2-ol in the solid state. Hydrolysis in one case gave the respective beta-hydroxy ketone. (C) 2002 Elsevier Science B.V. All rights reserved.
Meier Herbert, Saul Klaus, Jacob Dominic, Liebigs Ann. Chem, 19 (1994) N 3, S 313-319