Efficient Addition Reaction of Bromonitromethane to Aldehydes Catalyzed by NaI: A New Route to 1-Bromo-1-nitroalkan-2-ols under Very Mild Conditions
作者:José M. Concellón、Humberto Rodríguez-Solla、Carmen Concellón、Santiago García-Granda、M. Rosario Díaz
DOI:10.1021/ol062451f
日期:2006.12.1
[Structure: see text] A catalytic NaI-mediated novel synthesis of 1-bromo-1-nitroalkan-2-ols was carried out by reaction of bromonitromethane with a variety of aldehydes, under very mild conditions. When the reaction was performed with chiral N,N-dibenzyl alaninal, the corresponding enantiopure (1S,2S,3S)-3-dibenzylamino-1-bromo-1-nitrobutan-2-ol was obtained with good stereoselectivity. The structure
[结构:见正文]在非常温和的条件下,通过溴硝基甲烷与各种醛的反应,进行了NaI介导的新型催化1-溴-1-硝基烷-2-醇的合成。当用手性N,N-二苄基丙氨酸进行反应时,以良好的立体选择性得到相应的对映纯(1S,2S,3S)-3-二苄基氨基-1-溴-1-硝基丁烷-2-醇。通过X射线分析确定该对映体纯的溴代醇的结构。