3,4-Alkadienyl ketones via the palladium-catalyzed decarboxylative allenylation of 3-oxocarboxylic acids
作者:Tonghao Zhu、Shengming Ma
DOI:10.1039/c7cc02050c
日期:——
In this communication, we report a palladium-catalyzed decarboxylative allenylation of benzyl carbonates and tert-butyl carbonates of 2,3-allenols with 3-oxocarboxylic acids. The reaction provides a new and straightforward approach to 3,4-dienyl ketones under mild conditions.
Palladium‐Catalyzed Asymmetric Amination of Allenyl Phosphates: Enantioselective Synthesis of Allenes with an Additional Unsaturated Unit
作者:Qiankun Li、Chunling Fu、Shengming Ma
DOI:10.1002/anie.201402647
日期:2014.6.16
A highly enantioselective Pd‐catalyzedamination of allenylphosphates generating 2,3‐allenyl amines with central chirality has been developed. Under the optimized conditions, chiral 2,3‐allenyl amines with or without (an) additional CC double or triple bond(s) have been prepared at 0 °C with up to 90 % yield and 94 % ee by identifying (R)‐3,4,5‐(MeO)3‐MeOBIPHEP as the ligand.