Stereochemical study of imines and theirN-borane adducts by1H,11B,13C and15N NMR
作者:Armando Ariza-Castolo、M. Angeles Paz-Sandoval、Rosalinda Contreras
DOI:10.1002/mrc.1260300612
日期:1992.6
The synthesis and NMR spectra of the N-borane adducts of two diimines, N-borane-bis(α-phenylethylidene)ethylenediamine and N-borane-bis(α-phenylbenzylidene)ethylenediamine, and four imines, N-borane-α-methylethylidene-2-phenylethylamine, two N-borane-α-phenylethylidene-n-butylamines and N-borane-α-phenylbenzylidene-n-butylamine, are reported. The NMR spectra of the N-borane adducts of these imines can be used to determine their configuration.
Free Radical-Mediated Aryl Amination and Its Use in a Convergent [3 + 2] Strategy for Enantioselective Indoline α-Amino Acid Synthesis
作者:Rajesh Viswanathan、Erode N. Prabhakaran、Michael A. Plotkin、Jeffrey N. Johnston
DOI:10.1021/ja0284308
日期:2003.1.1
reduction by stannane, offering an advantage over the use of diazo and azide functional groups as nitrogen sources for carbon radicals. The free radical-mediated aryl amination was sequenced with the O'Donnell phase transfer-catalyzed enantioselective alkylation strategy of glycinyl imine to provide either enantiomer of indoline alpha-amino acids with high ee. These new constrained phenyl alanine derivatives
Synthesis of isoindolin-1-ones via palladium-catalyzed intermolecular coupling and heteroannulation between 2-iodobenzoyl chloride and imines
作者:Chan Sik Cho、Hyung Sup Shim、Heung-Jin Choi、Tae-Jeong Kim、Sang Chul Shim、Myung Chul Kim
DOI:10.1016/s0040-4039(00)00495-0
日期:2000.5
2-Iodobenzoyl chloride reacts with an array of imines in acetonitrile–methanol undercarbonmonoxidepressure in the presence of a catalytic amount of bis(triphenylphosphine)palladium(II) chloride/triphenylphosphine together with triethylamine to afford the corresponding isoindolin-1-ones in moderate yields.