Department of Chemistry, Washington University, St. Louis, Missouri 63130, United States.
Org Lett. 2010 Nov 19;12(22):5174-7. doi: 10.1021/ol102193x. Epub 2010 Oct 14.
Catalytic intramolecular hydroamination of dithioketene acetals was developed for the synthesis of cyclic amino acid derivatives. Triggered by the addition of a catalytical amount of n-BuLi, the reaction proceeds to give proline and pipecolic acid derivatives in excellent yields and diastereoselectivity.
二硫酮缩醛的催化分子内氢胺化反应被开发用于合成环状氨基酸衍生物。在催化量的正丁基锂的引发下,该反应以优异的收率和非对映选择性得到脯氨酸和哌啶酸衍生物。