An expedient solvent-free C-benzylation of 4-hydroxycoumarin with styrenes
作者:Rana Chatterjee、Anindita Mukherjee、Sougata Santra、Grigory V. Zyryanov、Oleg N. Chupakhin、Adinath Majee
DOI:10.1016/j.mencom.2021.01.039
日期:2021.1
Direct Catalytic Benzylation of Hydroxycoumarin - Efficient Synthesis of Warfarin Derivatives and Analogues
作者:Magnus Rueping、Boris Nachtsheim、Erli Sugiono
DOI:10.1055/s-0029-1219936
日期:2010.6
Effective metal-catalyzed benzylations of 4-hydroxycoumarin have been developed. Employing a low amount of a cheap, nontoxic, and air-stable catalyst the 3-alkylated hydroxycoumarins were isolated in high yields after short reaction times. Applying this new methodology two widely used anticoagulants phenprocoumon and coumatetralyl were synthesized applying mild reaction conditions.