A new route for the synthesis of indolizidine (−)-209D: excellent diastereoselectivity in the intramolecular hydroamination of alkynes
作者:Nitin T. Patil、Nirmal K. Pahadi、Yoshinori Yamamoto
DOI:10.1016/j.tetlet.2005.01.139
日期:2005.3
A highly efficient synthesis of indolizidine (−)-209D I has been accomplished. The key reaction in the synthesis is the palladium(0)/benzoic acid catalyzed intramolecular hydroamination of the ε-amino alkyne 6. The excellent diastereoselectivity in the intramolecular hydroamination is discussed on the basis of the proposed transition state.
已经完成了吲哚并咪唑(-)-209D I的高效合成。合成中的关键反应是ε-氨基炔烃6的钯(0)/苯甲酸催化的分子内加氢胺化作用。基于所提出的过渡态,讨论了分子内加氢胺化反应中极好的非对映选择性。