One-Pot Synthesis of α-Halo β-Amino Acid Derivatives via the Difunctional Coupling of Ethyl α-Diazoacetate with Silyl Halides and N,O-Acetals or Aromatic Tertiary Amines
nucleophile and N,O-acetals as an electrophile under metal-free conditions is described. This process undergoes a novel three-component coupling (3-CC) reaction using EDA, which leads to a one-pot preparation of α-halo β-amino acid esters. Also, this protocol could be adapted to accept an electrophile composed of aromatic tertiary amines. In both 3-CC reactions, the key reaction intermediate is an iminium
A Convenient Synthesis of<i>N</i>-(α-Alkoxyalkyl)- and<i>N</i>-[α-(Alkylthio)alkyl]amines
作者:Alan R. Katritzky、Wei-Qiang Fan、Qiu-He Long
DOI:10.1055/s-1993-25837
日期:——
Aminoalkylation of alcohols and of thiols by N-[1-(benzotriazol-1-yl)alkyl]amines under mild conditions give N-(α-alkoxyalkyl)amines 2 and N-[α-(alkylthio)alkyl]amines 3, respectively, in good yields.
Cyanomethylamines and azidomethylamines: new general methods of the synthesis and transformations
作者:Orudzh G. Nabiev、Zargalam O. Nabizade、Remir G. Kostyanovsky
DOI:10.1016/j.mencom.2009.09.018
日期:2009.9
Simple and efficient methods have been developed to obtain cyanomethylamines and azidomethylamines using reactions of methoxymethylamines with TMSCN and TMSN3, respectively. In the case of dimethylformamide dimethylacetal, only one MeO group was substituted with CN, and an unexpected direction of the subsequent azidation was found. Adducts of azidomethylamines with DMAD were studied, and the base-catalyzed isomerization of symmetric triazoles into non-symmetric ones was revealed.