Water-Promoted Synthesis of Enaminones: Mechanism Investigation and Application in Multicomponent Reactions
摘要:
Highly stereoselective synthesis of Z-enaminones bearing reactive secondary amino group has been successfully performed in water using tertiary amino group functionalized enaminones under ambient conditions. An interesting promotion effect of water on the reaction via hydrolysis-dehydration condensation has been observed through a designed isotope labeling experiment. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
)-1-arylprop-2-en-1-ones with anilines and ninhydrin in an equimolar ratio upon grinding in the presence of acetic acid (0.1 ml per mmol of reactants) afforded highlyfunctionalized dihydroindeno[1,2-b]pyrroles regio- and stereoselectively in good yields. This protocol has advantages such as solvent-free reactions under grinding, ambient temperature, short reaction times, simple work-up avoiding chromatographic
(E)-3-(二甲基氨基)-1-芳基丙-2-烯-1-酮与苯胺和茚三酮的等摩尔比,在乙酸存在下研磨时容易进行的三组分多米诺反应(0.1 ml / mmol反应物)以良好的收率选择性和高度选择性地提供了高度官能化的二氢茚并[1,2- b ]吡咯。该方案具有诸如在研磨条件下无溶剂反应,环境温度,较短的反应时间,无需色谱纯化即可进行简单后处理等优点,并具有出色的收率。
Water-Promoted Synthesis of Enaminones: Mechanism Investigation and Application in Multicomponent Reactions
作者:Yunyun Liu、Rihui Zhou、Jie-Ping Wan
DOI:10.1080/00397911.2012.715712
日期:2013.9.17
Highly stereoselective synthesis of Z-enaminones bearing reactive secondary amino group has been successfully performed in water using tertiary amino group functionalized enaminones under ambient conditions. An interesting promotion effect of water on the reaction via hydrolysis-dehydration condensation has been observed through a designed isotope labeling experiment. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.