On the mechanism of the reaction of enamines and dimethyl acetylenedicarboxylate (DMAD) in polar and apolar solvents |
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Authors: | GW Visser W Verboom WP Trompenaars DN Reihoudt |
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Institution: | Twente University of Technology, Enschede, The Netherlands |
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Abstract: | 2+2]-Cycloadducts of enamines and DMAD, formed in apolar solvents, isomerize to pyrrolizine derivatives under mild conditions in protic polar solvents like methanol and 1-butanol. |
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