科研之友
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摘要
The asymmetric 1,3-dipolar cycloaddition of azomethine mimes to homoallylic alcohols was achieved by utilizing diisopropyl (R,R)-tartrate as a chiral auxiliary to give the corresponding optically active trans-pyrazolidines with excellent regio-, diastereo-, and enantioselectivities. The catalytic use of diisopropyl (R,R)-tartrate was also effective in the presence of MgBr2,
- 出版日期2010-10-5
