Water: A Suitable Medium for the Petasis Borono-Mannich Reaction
作者:Nuno R. Candeias、Luís F. Veiros、Carlos A. M. Afonso、Pedro M. P. Gois
DOI:10.1002/ejoc.200900056
日期:——
Water was used as the solvent in the Petasisborono-Mannichreaction. With the use of salicylaldehyde, secondary amines and boronic acids, several alkylaminophenols were obtained in considerably high yields in water. By using the same methodology, 2H-chromenes were prepared with the use of vinyl boronic acids. The reaction mechanism was studied by DFT calculations, and the results obtained corroborate
Solvent‐free Synthesis of Alkylaminophenols via Petasis Boronic Mannich Reaction in One Pot without Catalysts
作者:Ying Liu、Limin Wang、Yuanyuan Sui、Jianjun Yu
DOI:10.1002/cjoc.201090340
日期:2010.10
By using solvent‐free and heat conditions, the Petasis boronic Mannich reaction of salicylaldehydes with various boronic acids and secondary amines without catalyst is described. The alkylaminophenols were obtained in moderate to good yields in a shorter reaction time than the traditional methods.