One-pot three-component synthesis of 1-amidoalkyl naphthols and polyhydroquinolines using a deep eutectic solvent: a green method and mechanistic insight
The multicomponent synthesis of 1-amidoalkyl naphthols and polyhydroquinolines has been developed as an atom-economic procedure catalyzed by a deepeutecticsolvent ([CholineCl][ZnCl2]3). The reactions proceed smoothly at low temperatures for a short reaction time without the use of toxic and volatile organic solvents. Deepeutecticsolvents are capable of not only allowing multicomponent reactions
Solvent-free, one-pot synthesis of amidoalkyl naphthols by a copper p-toluenesulfonate catalyzed multicomponent reaction
作者:Min Wang、Yan Liang
DOI:10.1007/s00706-010-0429-7
日期:2011.2
AbstractAn efficient synthesis of amidoalkyl naphthols using copper p-toluenesulfonate (CPTS) as catalyst for the three-component condensation reaction of 2-naphthol, aldehydes, and amides under thermal, solvent-free conditions is described. This new approach has advantages such as short reaction time, high yield, simple work-up, and reusable catalyst. Graphical abstract
Silica Supported Methanesulfonic Acid as an Efficient and Reusable Heterogeneous Catalyst for the Synthesis of Amidoalkyl Naphthols
作者:Min Wang、Yan Liang、Tingting Zhang、Jingjing Gao
DOI:10.1002/cjoc.201180296
日期:2011.8
amidoalkyl naphthols from three‐component one‐pot condensation of 2‐naphthol, aldehydes, amides or urea in the presence of silica supported methanesulfonic acid under thermal solvent‐free conditions has been described. The catalyst is stable, efficient, easily prepared, and reusable. The remarkable features of this methodology are short reaction time, excellent yields, simple experimental and work‐up procedures
Synthesis of 1-amidoalkyl-2-naphthols via three-component condensation of 2-naphthol, aldehydes, and amides/urea
作者:M. Wang、Y. Liang、T. T. Zhang、J. J. Gao
DOI:10.1007/s10600-012-0200-x
日期:2012.5
An efficient three-component one-pot synthesis of 1-amidoalkyl-2-naphthols from 2-naphthol, aldehydes, and amides/urea using tin tetrachloride as catalyst at 80aC without solvent is described. The structures of the new compounds were characterized by IR, 1H NMR, and 13C NMR spectra and by elemental analysis. The advantages of the new method were good yields (45–97%), short reaction times (0.1–4 h), simple work-up, inexpensive catalyst, and the diversity of the method.
A one-pot multicomponent reaction for synthesis of 1-amidoalkyl-2-naphthols catalyzed by PEG-based dicationic acidic ionic liquids under solvent-free conditions
作者:Jun Luo、Qiang Zhang
DOI:10.1007/s00706-011-0522-6
日期:2011.9
and efficient method was developed for preparation of amidoalkyl naphthols via one-pot three-component condensation of aldehydes with amides and 2-naphthol in the presence of polyethylene glycol (PEG)-based dicationic acidic ionic liquid as a powerful catalyst undersolvent-freeconditions. Excellent yields, short reaction time, simple work-up, and reusable catalyst are advantages of this procedure.