Asymmetric Multifunctional Modular Organocatalysis: One-Pot Direct Strategy to Enantiopure Α,β-Disubstituted Γ-Butyrolactones.
Organic letters(2019)
摘要
A simple and efficient approach to enantioenriched α,β-disubstituted γ-butyrolactones has been developed through multifunctional modular organocatalysis in a highly enantioselective (>99% ee) and diastereoselective (>30:1) manner following a one-pot sequential Michael-hemiacetalization-oxidation reaction. The catalytic process has great substrate compatibility, and the products have been transformed to synthetically useful molecules. The methodology has also been applied to the formal synthesis of (+)-Pilocarpine.
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