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L-Proline as an Efficient Catalyst for the Synthesis of 2,4,5-Triaryl-1H-Imidazoles
Nana V. Shitole,Kiran F. Shelke,Swapnil S. Sonar,Sandip A. Sadaphal,Bapurao B. Shingate,Murlidhar S. Shingare 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.9
L-Proline has been found to be an efficient organocatalyst for one-pot synthesis of 2,4,5-triaryl substituted imidazole by the reaction of an aldehyde, a benzil and an ammonium acetate. The short reaction time and excellent yields making this protocol practical and economically attractive.
L-Proline as an Efficient Catalyst for the Synthesis of 2,4,5-Triaryl-1H-Imidazoles
Shitole, Nana V.,Shelke, Kiran F.,Sonar, Swapnil S.,Sadaphal, Sandip A.,Shingate, Bapurao B.,Shingare, Murlidhar S. Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.9
L-Proline has been found to be an efficient organocatalyst for one-pot synthesis of 2,4,5-triaryl substituted imidazole by the reaction of an aldehyde, a benzil and an ammonium acetate. The short reaction time and excellent yields making this protocol practical and economically attractive.
Microwave-Assisted Synthesis of 3-Styrylchromones in Alkaline Ionic Liquid
Kiran F. Shelke,Suryakant B. Sapkal,Nana V. Shitole,Bapurao B. Shingate,Murlidhar S. Shingare 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.12
A simple, highly efficient and environmentally benign method for the synthesis of 3-styrylchromones from 3-formylchromones and 4-nitrophenylacetic acid/4-nitrotolune in the presence of catalytic amount of basic ionic liquid 1-butyl-3-methylimidazolium hydroxide [(bmim)OH] carried out under the influence of microwave irradiation. This method gives remarkable advantages such as, short reaction times, simple work-up procedure and moderate to good yields. The ionic liquid was successfully reused for four cycles without significant loss of activity.
Alum Catalyzed Convenient Synthesis of Quino[2,3-b][1,5 benzoxazepine α-Aminophosphonate Derivatives
Sonar, Swapnil S.,Sadaphal, Sandip A.,Shitole, Nana V.,Jogdand, Nivrutti R.,Shingate, Bapurao B.,Shingare, Murlidhar S. Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.8
We have described an efficient synthesis of quino[2,3-b][1,5]benzoxazepine α-aminophosphonate derivatives by the nucleophilic addition of triethyl phosphite to substituted quino[2,3-b][1,5]benzoxazepines promoted by easily available, inexpensive and mild catalyst KAl(S$O_4)_2{\cdot}12H_2$O(alum). The reactions proceed smoothly at room temperature under solvent-free reaction conditions and providing high yield of product in very short reaction time.
Microwave-Assisted Synthesis of 3-Styrylchromones in Alkaline Ionic Liquid
Shelke, Kiran F.,Sapkal, Suryakant B.,Shitole, Nana V.,Shingate, Bapurao B.,Shingare, Murlidhar S. Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.12
A simple, highly efficient and environmentally benign method for the synthesis of 3-styrylchromones from 3-formylchromones and 4-nitrophenylacetic acid/4-nitrotolune in the presence of catalytic amount of basic ionic liquid 1-butyl-3-methylimidazolium hydroxide [(bmim)OH] carried out under the influence of microwave irradiation. This method gives remarkable advantages such as, short reaction times, simple work-up procedure and moderate to good yields. The ionic liquid was successfully reused for four cycles without significant loss of activity.
Alum Catalyzed Convenient Synthesis of Quino[2,3-b][1,5]benzoxazepine α-Aminophosphonate Derivatives
Swapnil S. Sonar,Sandip A. Sadaphal,Nana V. Shitole,Nivrutti R. Jogdand,Bapurao B. Shingate,Murlidhar S. Shingare 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.8
We have described an efficient synthesis of quino[2,3-b][1,5]benzoxazepine α-aminophosphonate derivatives by the nucleophilic addition of triethyl phosphite to substituted quino[2,3-b][1,5]benzoxazepines promoted by easily available, inexpensive and mild catalyst KAl(SO4)2・12H2O (alum). The reactions proceed smoothly at room temperature under solvent-free reaction conditions and providing high yield of product in very short reaction time.