catalysts based on Al2O3, supercritical carbon dioxide not only acts as a good solvent for the reaction of aromatic and aliphaticaldehydes with 1-nitroalkanes but, most importantly, it also allows the selectivity to be tuned between the competitive formation of beta-nitroalcohols and nitroalkenes (from the Henry reaction and the nitroaldol condensation, respectively). In particular, when the pressure
Preparation of Pyrroles Having Long Alkyl Chains from Nitroalkenes
作者:Noboru Ono、Kazuhiro Maruyama
DOI:10.1246/bcsj.61.4470
日期:1988.12
Pyrroles havinglongalkylchains at the 3-and/or 4-positions are readily prepared by the reaction of ethyl isocyanoacetate with nitroalkenes havinglongalkylchains.
PALLADIUM CATALYZED SYNTHESIS OF ALLYLIC SULFONES. UTILIZATION OF α-NITRO OLEFINS AS ALLYLIC NITRO COMPOUNDS
作者:Rui Tamura、Koji Hayashi、Masato Kakihana、Masanori Tsuji、Daihei Oda
DOI:10.1246/cl.1985.229
日期:1985.2.5
α-Nitro olefins reacted with sodium benzenesulfinate in the presence of tertiary amine and palladium(0) catalyst to afford allylic sulfones. The competition experiment showed that relative rate of the sulfonylation of an α-nitro olefin to that of the corresponding allylic acetate was about 2.2.
Palladium-catalyzed substitutions of allylic nitro compounds. Regiochemistry
作者:Rui Tamura、Yoshiki Kai、Masato Kakihana、Koji Hayashi、Masanori Tsuji、Tsunehiro Nakamura、Daihei Oda
DOI:10.1021/jo00373a008
日期:1986.11
Facile synthesis of allylic nitro compounds by N,N-dimethylethylenediamine-catalyzed condensation of aliphatic and alicyclic ketones with primary nitroalkanes