作者:Olivier Mahé、Isabelle Dez、Vincent Levacher、Jean-François Brière
DOI:10.1002/anie.201002485
日期:2010.9.17
All paired up: Under catalytic phase‐transfer conditions the formation of a chiral ion pair between quininium cation 1 and hydrazine anion 2 led to an enantioselective aza‐Michael cyclocondensation domino reaction to furnish pyrazolines. A convenient one‐pot protocol allowed exchange of the functional group (R1) on the nitrogen atom.
全部配对:在催化相转移条件下,奎宁阳离子1和肼阴离子2之间形成手性离子对,导致对映选择性的氮杂-迈克尔环缩聚多米诺反应,得到吡唑啉。方便的一锅操作方案允许交换氮原子上的官能团(R 1)。