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.
[MeC(OH)2]+ClO4-: A New Efficient Organocatalyst for the Preparation of 1-Amido- and 1-Carbamato-alkyl Naphthols
作者:Fatemeh Tamaddon、Javad Bistgani
DOI:10.1055/s-0031-1289906
日期:2011.12
[MeC(OH)2]+ClO4 - as a super acidic ionic liquid is found to be a new and highly efficient catalyst in the synthesis of amidoalkyl naphthols via three-component condensation of β-naphthol and aldehydes with nitriles, amides, or carbamates. multicomponent reactions - amidoalkyl naphthols - ionic liquids - super acids
A silica gel supported dual acidic ionic liquid: an efficient and recyclable heterogeneous catalyst for the one-pot synthesis of amidoalkyl naphthols
作者:Qiang Zhang、Jun Luo、Yunyang Wei
DOI:10.1039/c0gc00472c
日期:——
acidic ionicliquidcatalyst was prepared via anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto silica gel by covalent bonds. The novelimmobilized acidic ionicliquid effectively catalyzed the one-pot synthesis of amidoalkylnaphthols by the multicomponent condensation of aldehydes with 2-naphthol and amides under solvent-free conditions. Moreover, the catalyst could
Piper-Betle-Shaped Nano-S-Catalyzed Synthesis of 1-Amidoalkyl-2-naphthols under Solvent-Free Reaction Condition: A Greener “Nanoparticle-Catalyzed Organic Synthesis Enhancement” Approach
作者:Vijay K. Das、Madhurjya Borah、Ashim J. Thakur
DOI:10.1021/jo302682k
日期:2013.4.5
Nano-S prepared by an annealing process showed excellent catalytic activity for the synthesis of 1-amidoalky1-2-naphthols under solvent-free reaction condition at 50 degrees C. The catalyst could be reused up to the fifth cycle without loss in its action. The green-ness of the present protocol was also measured using green metrics drawing its superiority.