Reactions of 4-pyridinecarbomitrile with sodium and aromatic imines provide a convenient and useful method for synthesising a new kind of substituted 4-pyridinemethanamines in good yields.
Indium trichloride (InCl3)catalyzed imino Diels-Alder reactions: An efficient synthesis of cyclopentaquinolines, azabicyclooctanones and azabicyclononanones
作者:Govindarajulu Babu、Paramasivan T. Perumal
DOI:10.1016/s0040-4020(97)10370-2
日期:1998.2
Anhydrous indiumtrichloride (InCl3) is found to catalyze the imino Diels-Alderreactions of Schiff's bases with cyclopentadiene, cyclohexen-2-one and cyclohepten-2-one which resulted in facile synthesis of cyclopentaquinolines, azabicyclooctanones and previously unreported series of azabicyclononanones.
Imino Diels-Alder reactions catalyzed by indium trichloride (InCl3). Facile synthesis of quinoline and phenanthridinone derivatives
作者:Govindarajulu Babu、Paramasivan T. Perumal
DOI:10.1016/s0040-4039(97)01060-5
日期:1997.7
Anhydrous indiumtrichloride (InCl3) is found to catalyze the imino Diels-Alderreactions and results in facile synthesis of quinoline derivatives. A previously unreported series of phenanthridinones was obtained by the treatment of cyclohexenones with Schiff bases.
β-Amino esters via the Reformatsky reaction: Restraining effects of the ortho-methoxyphenyl substituent
作者:James C. Adrian、Julia L. Barkin、Lamyaa Hassib
DOI:10.1016/s0040-4039(99)00248-8
日期:1999.3
β-Amino esters are, in most cases, the only products of the Reformatskyreaction in CH2Cl2 between (methoxycarbonyl)methyl zinc bromide (prepared in-situ) and imines prepared from either an aryl or alkyl aldehyde and o-anisdine (Scheme 2). Restraining properties of the ortho-methoxyphenyl group, which lead to sole formation of the β-amino ester, are ascribed to the inductive effect of the ortho-methoxy
An efficient and highly selective phosphine-free NN-manganese(I) complex catalyst system was developed for the acceptorless dehydrogenative coupling of alcohols with amines to form imines. The coupling reactions underwent at 3 mol % catalyst loading, and a large range of alcohols and amines with diverse functional groups was applied, including challenging diol and diamine. The target imine products were obtained in good to excellent yields. The present work provides an alternative method to construct highly active nonprecious metal complex catalysts based on phosphine-free ligands.