One-Step Assembly of Functionalized γ-Butyrolactones from Benzoins or Benzaldehydes via an N-Heterocyclic Carbene-Mediated Tandem Reaction
摘要:
We describe here a direct, efficient, one-step construction of gamma,gamma-difunctionalized gamma-butyrolactones from benzoins or benzaldehydes via a tandem reaction promoted by 1,3-dimethyl imidazolin-2-ylidene, an N-heterocyclic carbene (NHC).
Transition Metal-Mimicking Relay Catalysis by a Low-Valent Phosphorus Compound
作者:Sreejyothi P、Nimisha Gautam、Subir Maji、Kalishankar Bhattacharyya、Swadhin K. Mandal
DOI:10.1021/jacs.4c04376
日期:2024.6.19
relevant γ-butyrolactones through dual activation under ambient reaction conditions. The highly nucleophilic phosphorus(I) center plays a key role in leading to this transformation. Extensive experimental and theoretical studies suggest that the phosphorus center exhibits facile switching between its reduced state [P(I)] and its oxidized state [P(III)] during this transformation, mimicking the behavior of