Surface-mediated solid phase michael reaction: dramatic acceleration on alumina
作者:Brindaban C. Ranu、Sanjay Bhar、Dipak C. Sarkar
DOI:10.1016/0040-4039(91)85093-k
日期:1991.6
The Michael reaction of several β-dicarbonyl compounds, ethyl cyanoacetate, and diethyl malonate as donors with methyl vinyl ketone, acrolein and methyl acrylate as acceptors are carried out very efficiently on Al2O3 surface without any solvent.
几种β-二羰基化合物,氰基乙酸乙酯和丙二酸二乙酯(作为供体)与甲基乙烯基酮,丙烯醛和丙烯酸甲酯作为受体的迈克尔反应非常有效地在Al 2 O 3表面上进行,而无需任何溶剂。
Surface-mediated solid phase reaction: Dramatic improvement of Michael reaction on the surface of alumina
作者:Brindaban C. Ranu、Sanjay Bhar
DOI:10.1016/s0040-4020(01)90794-x
日期:1992.1
The Michael reaction of several 1,3-dicarbonyl compounds, nitroalkanes, and thiols as donors with methyl vinyl ketone, acrolein, methyl acrylate, methyl methacrylate, and mesityl oxide as acceptors on the surface of alumina without any solvent proceed very effeciently and furnish high yield of adducts.
<i>N</i>-phenyl-substituted pyrrolidines, piperidines and azabicyclics by a tandem reduction-double reductive amination reaction
作者:Richard A. Bunce、Derrick M. Herron、Jason R. Lewis、Sharadsrikar V. Kotturi
DOI:10.1002/jhet.5570400115
日期:2003.1
formed in high yield and are easily purified. The method has also been extended to the synthesis of fused N-phenylazabicyclics from 2-(3-oxo-propyl)cycloalkanones. A high degree of diastereoselectivity for the trans-fused product is observed in substrates having an ester group α to the cycloalkanone carbonyl. Bicyclic precursors lacking this ester group give mixtures of cis and trans products. Finally