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Title of article :
Discovery of an in situ carbocationic system using trityl chloride as a homogeneous organocatalyst for the solvent-free condensation of β-naphthol with aldehydes and amides/thioamides/alkyl carbamates in neutral media
Author/Authors :
Ardeshir Khazaei، نويسنده , , Mohammad Ali Zolfigol، نويسنده , , Ahmad Reza Moosavi-Zare، نويسنده , , Fereshteh Abi، نويسنده , , Abdolkarim Zare، نويسنده , , Hamideh Kaveh، نويسنده , , Vahid Khakyzadeh، نويسنده , , Masoud Kazem-Rostami، نويسنده , , Abolfath Parhami، نويسنده , , Hossein Torabi-Monfared، نويسنده ,
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هفته نامه با شماره پیاپی سال 2013
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Abstract :
Trityl chloride (TrCl), efficiently catalyzes the one-pot multi-component condensation of β-naphthol with aromatic aldehydes and amides/thioamides/carbamates such as acetamide, benzamide, nicotinamide, thioacetamide, and methylcarbamate under solvent-free and neutral conditions to afford 1-amido-alkyl-2-naphthols, 1-thioamido-alkyl-2-naphthols, and 1-carbamato-alkyl-2-naphthols in high yields and very short reaction times. Mechanistically, it is interesting that trityl chloride through the in situ generation of trityl carbocation with inherent instability is efficient as a reusable homogeneous organocatalyst in neutral media.
Keywords :
Trityl chloride , 1-Amido-alkyl-2-naphthol , Multi-component condensation , Solvent-free , 1-Thioamido-alkyl-2-naphthol , 1-Carbamato-alkyl-2-naphthol
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