A Study of the Influence of Base, Temperature and Reaction Time in Nitroaldol Reactions Using (R)-(+)-Glyceraldehyde Acetonide: Diastereoselective Synthesis of (4R, 5R)-Dihydro-5-((R)-1,2-Dihydroxyethyl)-4-Nitrofuran- 2(3H)-one
作者:Erica Pennaforte、Jeronimo Costa、Cristiane Silva、Marcelo Saraiva、Vera Pereira
DOI:10.2174/157017809787582771
日期:2009.3.1
The Henry reaction between the nitroalkanes 6-11 and (R)-(+)-glyceraldehyde acetonide (1), was investigated in respect to the variation of the base, temperature and reaction time. Nitroalcohols 5a-f were obtained in good yields (70- 85%) and moderate to good anti-selectivities (50-79%). The transformation of the nitroalcohol 5a,b in title γ-lactone 2, a potential precursor of bioactive β-aminoacids, was also investigated.
研究了硝基烷烃 6-11 与(R)-(+)-甘油醛缩丙酮(1)之间的亨利反应在碱、温度和反应时间方面的变化。得到的硝基醇 5a-f 产率良好(70-85%),反选择性中等至良好(50-79%)。此外,还研究了硝基醇 5a,b 向标题 γ-内酯 2(一种具有生物活性的 β-氨基酸的潜在前体)的转化。