作者:Ying-Chun Chen、Wei Du、Yan-Kai Liu、Lei Yue
DOI:10.1055/s-0028-1087300
日期:2008.12
The asymmetric 1,3-dipolar cycloaddition of nitrones to nitroolefins was investigated by employing novel thiourea-containing organocatalysts. This transformation exhibited excellent diastereoselectivities (generally >99:1 dr) and moderate to high enantioselectivities (up to 88% ee). A 2,3-diaminopropanol derivative with three contiguous chiral centers was efficiently prepared from one cycloaddition
通过采用新型含硫脲有机催化剂,研究了硝酮与硝基烯烃的不对称 1,3-偶极环加成反应。这种转化表现出优异的非对映选择性(通常 >99:1 dr)和中到高的对映选择性(高达 88% ee)。一种具有三个连续手性中心的 2,3-二氨基丙醇衍生物是由一个环加成加成物有效制备的。