Oxidative carbon carbon bond cleavage reaction of 1,2-diamines and 1,2-amino alcohols under an oxygen atmosphere
摘要:
Under an atmosphere of oxygen 1,2-diamines underwent clean oxidative cleavage in the presence of BF3-OEt2 to give imines in good to excellent yields. 1,2-Amino alcohols were also cleaved under the same conditions to give imines and aldehydes in good yields. (C) 2001 Elsevier Science Ltd. All rights reserved.
Crossed Pinacol Coupling Reaction between Aldehydes and Imines:A Rapid Access to 1,2-Amino Alcohols
作者:Makoto Shimizu、Atsushi Iwata、Hiroaki Makino
DOI:10.1055/s-2002-33510
日期:——
In the presence of zinc, boron trifluoride etherate, and methyltrichlorosilane, aldehydes and imines underwent a crossed pinacol coupling reaction to give 1,2-amino alcohols in good to excellent yields.
Samarium diiodide/nickel diiodide an efficient system for homo and heterocoupling reactions of imines
作者:Fouzia Machrouhi、Jean-Louis Namy
DOI:10.1016/s0040-4039(98)02673-2
日期:1999.2
Samariumdiiodide in the presence of a catalytic amount of nickel diiodidemediates a very fast dimerization of imines into vicinal diamines and the mixed coupling of imines and ketones to give β-amino alcohols.
A synthesis of α-amino acids via direct reductive carboxylation of imines with carbon dioxide
作者:Ajay A. Sathe、Douglas R. Hartline、Alexander T. Radosevich
DOI:10.1039/c3cc42057d
日期:——
A method for the synthesis of alpha-amino acids by direct reductive carboxylation of aromatic imines with CO2 is described. The protocol employs readily available commercial reagents and serves as a one-step alternative to the Streckersynthesis.
Highly Chemoselective Crossed Imino Pinacol Coupling Reaction Using the Synergetic Effect of Boron Trifluoride Etherate and Trichloromethylsilane
作者:Makoto Shimizu、Ikuhiro Suzuki、Hiroaki Makino
DOI:10.1055/s-2003-41419
日期:——
Use of boron trifluoride etherate and trichloromethylsilane in the presence of zinc-copper couple effects a crossed imino pinacol coupling reaction to give 1,2-diamines in good yields with high diastereoselectivities.
A Facile Synthesis of Vicinal Diamines Promoted by Low-Valent Niobium: Preparation of Chiral Octahydrobiisoquinolines and Their Application to Catalytic Asymmetric Synthesis
作者:Shigeru Arai、Satoshi Takita、Atsushi Nishida
DOI:10.1002/ejoc.200500301
日期:2005.12
homocoupling of imines to give vicinaldiaminespromoted by low-valentniobium, generated by treatment of NbCl5 with zinc powder, is described. The desired products were obtained in good to excellent yields. Dihydroisoquinoline derivatives also gave the coupling products with good diastereoselectivities (D,L/meso). Optical resolution of the racemic octahydrobiisoquinolines was achieved and their complexes