Organocatalytic Formal [4 + 2] Cycloaddition of O-Quinone-methyl Derivatives and 2-Isocyanatomalonate Diesters for the Construction of Chroman Derivatives with Adjacent Quaternary Chiral Centers
Organic chemistry frontiers（2024）
摘要
An asymmetric organocatalytic formal [4 + 2] cycloaddition/annulation cascade of ortho-quinone methides with 2-isocyanatomalonate diesters has been reported.
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