摘要
An efficient solvent‐free protocol for the synthesis of 14‐aryl‐14H‐dibenzo[a,j]xanthenes from the condensation of 2‐naphthol with arylaldehydes, using acetic acid functionalized imidazolium salts (1‐carboxymethyl‐3‐methylimidazolium bromide ([cmmim]Br) and 1‐carboxymethy1‐3-me-thylimidazolium tetrafluoroborate([cmmim]BF4) as reusable catalysts, has been developed. The turn over frequency on the catalysts is several times higher than the other previously reported catalysts. Also, thermal gravimetric analysis and powder X‐ray diffraction pattern of the catalysts have been studied.
An efficient solvent-free protocol for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes from the condensation of 2-naphthol with arylaldehydes, using acetic acid functionalized imidazolium salts （1-carboxymethyl-3-methylimidazolium bromide （[cmmim]Br） and 1-carboxymethy1-3- me-thylimidazolium tetrafluoroborate （[cmmim]BF4） as reusable catalysts, has been developed. The turn over frequency on the catalysts is several times higher than the other previously reported catalysts. Also, thermal gravimetric analysis and powder X-ray diffraction pattern of the catalysts have been studied.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2014年第4期573-578,共6页
基金
Bu-Ali Sina University and University of Sayyed Jamaleddin Asadabadi, Asadabad
关键词
可重复使用
催化剂
离子液体
萘酚
缩合
芳醛
功能化
醋酸
14-Aryl-14H-dibenzo[a,j]xantheneAcetic acid functionalized ionic liquid2-NaphtholAldehydeCatalystSolvent-free
