期刊
TETRAHEDRON-ASYMMETRY
卷 17, 期 1, 页码 107-111出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2005.11.020
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A variety of enantiopure proline derived pyrrolidinium (HX)(n) salts have been found to catalyse the 1,4-conjugate addition of AT-methylpyrrole to cyclopent-1-ene carbaldehyde with, in some cases, high diastereo- and enantioselectivity. Parameters such as water activity, choice of acidic cocatalyst (HX)(n) and also the amount of cocatalyst used turned out to be crucial for the diastereo- and enantioselectivity of the reaction. (c) 2005 Elsevier Ltd. All rights reserved.
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