Nitroaldol (Henry) reaction catalyzed by amberlyst A-21 as a far superior heterogeneous catalyst.
作者:Roberto Ballini、Giovanna Bosica、Paola Forconi
DOI:10.1016/0040-4020(95)00996-5
日期:1996.1
β-Nitroalcohols can be efficiently obtained with the help of AmberlystA-21, as heterogeneous basic catalyst, with or without solvent. This method is farsuperior to the heterogeneouscatalysts previously reported for the nitroaldol (Henry) reaction, in fact it gives higher yields with primary and secondary nitroalkanes, the formation of by-products such as nitroalkenes is avoited even if aromatic
Improved Nitroaldol Reactions and Reductive Routes to Vicinal Aminoalcohols
作者:Ernest W. Colvin、Albert K. Beck、Dieter Seebach
DOI:10.1002/hlca.19810640732
日期:1981.11.4
Regioselective and flexible procedures are described for the preparation of a variety of protected vicinal nitroalcohols 1, 3 and 5 (see Scheme 5), as is an efficient method for their reduction to the corresponding vicinal aminoalcohols 2, 4 and 6.
P(RNCH<sub>2</sub>CH<sub>2</sub>)<sub>3</sub>N: An Efficient Promoter for the Nitroaldol (Henry) Reaction
作者:Philip B. Kisanga、John G. Verkade
DOI:10.1021/jo9818733
日期:1999.6.1
The use of catalytic amounts of the proazaphosphatranes P(MeNCH2CH2)(3)N, P(i-PrNCH2CH2)(3)N and P(HNCH2CN2)(i-PrNCH2CH2)(2)N as nonionic bases in the reaction of nitroalkanes with carbonyl compounds is reported. The reaction proceeds at room temperature in the presence of 2.2 equiv of magnesium sulfate to produce the corresponding beta-nitroalkanols in generally superior yields. Aldehydes react quantitatively in 5-60 min, whereas ketones require up to 3 h to react with nitromethane and up to 7 h for the reaction of ketones with higher nitroalkanes.
Arsine Oxides of Naphthalene and Biphenyl<sup>1</sup>
作者:G. O. Doak、Harry Eagle、H. G. Steinman
DOI:10.1021/ja01257a015
日期:1942.5
COLVIN, E. W.;BECK, A. K.;SEEBACH, D., HELV. CHIM. ACTA, 1981, 64, N 7, 2264-2271