A highly efficient, simple and clean solvent-free protocol for the synthesis of polyhydroquinolines is described. The one-pot multi-component condensation reaction between arylaldehydes, dimedone (5,5-dimethylcyclohexane-1,3-dione), beta-ketoesters and ammonium acetate in the presence of 2.5 mol% of melamine trisulfonic acid (MTSA) at 60 degrees C affords the title compounds in high yields (83-98%) and short reaction times (3-30 min).
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Indian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, IndiaIndian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, India
Ranu, BC
Dey, SS
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Indian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, IndiaIndian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, India
Dey, SS
Hajra, A
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Indian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, IndiaIndian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, India
机构:
Indian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, India
Kamal, Ahmed
Khan, M. Naseer A.
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Indian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, India
Khan, M. Naseer A.
Srikanth, Y. V. V.
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Indian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, India
Srikanth, Y. V. V.
Reddy, K. Srinivasa
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Indian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, IndiaIndian Inst Chem Technol, Div Organ Chem, Biotransformat Lab, Hyderabad 500007, Andhra Pradesh, India
Reddy, K. Srinivasa
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE,
2008,
86
(12):
: 1099
-
1104