Ramachary, Dhevalapally B. ; Madhavachary, R. ; Prasad, M. Shiva (2012) Observation of neighboring ortho-hydroxyl group participation in organocatalytic asymmetric sequential Michael-lactonization reactions: synthesis of highly substituted chiral spirodihydrocoumarins Organic and Biomolecular Chemistry, 10 (30). p. 5825. ISSN 1477-0520
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Official URL: http://doi.org/10.1039/C2OB07122C
Related URL: http://dx.doi.org/10.1039/C2OB07122C
Abstract
A general approach to asymmetric synthesis of highly substituted spirodihydrocoumarins with a quaternary stereocenter was achieved through neighboring ortho-hydroxyl group induced sequential Michael–lactonization reactions on 2-(2-nitrovinyl)phenols with alkyl cyclopentanone-2-carboxylates in the presence of a catalytic amount of quinine–NH–thiourea followed by p-TSA.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The Royal Society of Chemistry. |
| ID Code: | 120678 |
| Deposited On: | 03 Jul 2021 08:08 |
| Last Modified: | 03 Jul 2021 08:08 |
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