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Start Over Descriptor "stereoselective conjugate addition" Language spanish; castilian
1 results on '"stereoselective conjugate addition"'

1. Reação entre fenilnitrometanos e enoato derivado do D-manitol na presença de TBAF ou DBU: adição conjugada sin-seletiva e reação de NEF consecutiva The reaction between Phenylnitromethanes and enoate derived from D-mannitol in the presence of TBAF or DBU: tandem syn-selective conjugate addition and NEF reaction

Author

Ayres G. Dias, Vagner D. Pinho, and Paulo R. R. Costa

Subjects
Nef reaction, chiral enoates, stereoselective conjugate addition, Chemistry, QD1-999
Abstract

A tandem syn-selective conjugate addition - Nef reaction was observed when phenylnitromethane and oxygenated derivatives were allowed to react with an enoate derived from D-mannitol at rt in the presence of TBAF or DBU. While nitro-adducts predominate after 4h of reaction, the corresponding ketones were the main products after 12-24h of reaction. The Nef reaction occurred without racemization of the stereogenic center generated in the conjugate addition step.

Published
2008
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