Pentafluorophenylammonium Triflate (PFPAT): An Efficient, Practical, and Cost-Effective Catalyst for One-Pot Condensation of β-Naphthol, Aldehydes and Cyclic 1,3-Dicarbonyl Compounds
作者:Samad Khaksar、Nosratollah Behzadi
DOI:10.2174/138620712803901153
日期:2012.11.7
A pentafluorophenylammonium triflate (PFPAT) catalyst (10 mol%) efficiently promoted one-pot condensation of β-naphthol, aldehydes, and cyclic 1,3-dicarbonyl compounds in good to excellent yield under mild reaction conditions. These catalytic condensations have advantages from the viewpoint of green chemistry. PFPAT organocatalyst is air-stable, cost-effective, easy to handle, and easily removed from
Libraries of benzoxanthenes, as well as of benzochromenes, were efficiently synthesized via one-pot, three-componentreactions of 2-naphthol, aldehydes, and cyclic 1,3-diketones/malononitrile/ethyl cyanoacetate in the presence of catalytic amount of ceric ammonium nitrate (CAN) under solvent free conditions. The protocol offers rapid synthesis of structurally diverse benzoxanthenes and benzochromenes
Efficient One-Pot Condensation of <font>β</font>-Naphthol, Aldehydes, and Cyclic 1,3-Dicarbonyl Compounds Catalyzed by <i>p</i>-TSA Under Solvent-Free and Sonication Conditions
作者:Jianjun Li、Jia Li、Jin Fang、Weike Su
DOI:10.1080/00397910903029966
日期:2010.3.12
A facile and efficient procedure has been developed by one-pot condensation of β-naphthol, aldehydes, and cyclic 1,3-dicarbonyl compounds for the synthesis of 8,9,10,12-tetrahydrobenzo[a]xanthen-11-one or 8,9-dihydrobenzo-[f]cyclopenta[b]chromen-10(11H)-one derivatives catalyzed by p-toluenesulfonic acid undersolvent-free and sonication conditions.