| Literature DB >> 18642826 |
Xu Tian1, Kun Jiang, Jing Peng, Wei Du, Ying-Chun Chen.
Abstract
The asymmetric Mannich reaction of 3-substituted oxindoles and N-Boc imines was investigated for the first time, employing bifunctional thiourea-tertiary amine organocatalysts based on DPEN scaffold. The novel transformations exhibited high diastereoselectivities, and the Mannich adducts bearing adjacent quaternary and tertiary chiral centers were generally obtained in good to excellent enantioselectivities (up to 95% ee).Entities:
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Year: 2008 PMID： 18642826 DOI： 10.1021/ol801351j
Source DB: PubMed Journal: Org Lett ISSN： 1523-7052 Impact factor: 6.005