Organocatalyzed Conjugate Addition of Carbonyl Compounds to Nitrodienes/Nitroenynes and Synthetic Applications
作者:Sébastien Belot、Adrien Quintard、Norbert Krause、Alexandre Alexakis
DOI:10.1002/adsc.200900814
日期:2010.3.8
The purpose of this study is to point out the synthetic utility of a new class of Michael acceptors (nitrodienes and nitroenynes). The highly enantioselective organocatalytic Michael addition of carbonyl compounds to these functionalized nitroolefins has been carried out in the presence of (S)‐diphenylprolinol silyl ether to achieve some interesting building blocks in high selectivities. The adducts
这项研究的目的是指出新型迈克尔受体(硝基二烯和硝基烯)的合成作用。在(S)存在下进行了羰基化合物向这些官能硝基烯烃的高对映选择性有机催化Michael加成反应。)-二苯基脯氨醇甲硅烷基醚以高选择性获得一些有趣的结构单元。这样获得的加合物可以利用相应的不饱和碳-碳键轻松地转化。在存在双键的情况下,可以进行复分解或亲电活化,而在存在三键的情况下,可以进行亲电活化。因此,我们专注于双均炔丙基醇的金催化环化反应,以提供相应的取代四氢呋喃。然后,我们还证明了有机催化剂和金催化剂在单锅法中是相容的。的确,