An organocatalytic direct Mannich-cyclization cascade as [3+2] annulation: asymmetric synthesis of 2,3-substituted pyrrolidines |
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| Authors: | Kumar Indresh Mir Nisar A Gupta Vivek K Rajnikant |
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| Affiliation: | Department of Chemistry, Birla Institute of Technology & Science, Pilani 333 031, Rajasthan, India. indresh.chemistry@gmail.com |
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| Abstract: | ![]()
A new method for asymmetric synthesis of 2,3-substituted pyrrolidines from N-PMP aldimines and succinaldehyde via formal [3+2] cycloaddition is reported. This reaction involves proline catalyzed direct Mannich reaction and acid catalyzed reductive cyclization with high yields (up to 78%) and excellent enantioselectivities (up to >99%). |
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