NISCAIR Online Periodicals Repository Collection: IJC-B Vol.51B(07) [July 2012]

Potassium phosphate catalyzed efficient synthesis of 3-carboxycoumarins

Thu, 28 Jun 2012 22:58:59 GMT

Title: Potassium phosphate catalyzed efficient synthesis of 3-carboxycoumarins

Authors: Undale, Kedar A; Gaikwad, Dipak S; Shaikh, Tarannum S; Desai, Uday V; Pore, Dattaprasad M

Abstract: An efficient and rapid synthesis of 3-carboxycoumarins has been expediently accomplished by a reaction of salicylaldehyde with Meldrum’s acid using potassium phosphate as an inexpensive catalyst at ambient temperature.

Page(s): 1039-1042

Fuller’s earth catalyzed rapid synthesis of bis(indolyl)methanes under solvent free condition

Thu, 28 Jun 2012 22:58:59 GMT

Title: Fuller’s earth catalyzed rapid synthesis of bis(indolyl)methanes under solvent free condition

Authors: Kapuriya, Naval; Kakadiya, Rajesh; Savant, Mahesh M; Pansuriya, Akshay M; Bhuva, Chirag V; Patel, Anil S; Pipaliya, Piyush V; Audichya, Vipul B; Gangadharaiah, Sarala; Anandalwar, Sridhar M; Prasad, Javaregowda S; Shah, Anamik; Naliapara, Yogesh T

Abstract: A rapid and highly efficient synthesis of various bis(indolyl)methanes with high yield by the reaction of indoles 1a-c and arylaldehydes 2a'-m' in presence of fuller’s earth is demonstrated. This simple and versatile protocol is found to be an efficient catalyst for the electrophilic addition reaction of indole and works well under solvent free condition as well as in aqueous medium. The structure of newly synthesized compound 3m has been confirmed by single crystal X-ray crystallography.

Page(s): 1032-1038

Studies on the reaction of N-bromosuccinimide in dimethylsulphoxide: Part X — Action on cholest-4-en-3,6-dione

Thu, 28 Jun 2012 22:58:59 GMT

Title: Studies on the reaction of N-bromosuccinimide in dimethylsulphoxide: Part X — Action on cholest-4-en-3,6-dione

Authors: Pradhan, B P; Debnath, Utpal; Pradhan, Nagendra Narayan; Ghosh, Pranab

Abstract: The reaction of cholest-4-en-3,6-dione, 1 with N-bromosuccinimide in dimethyl sulphoxide furnishes three compounds which have been identified as 2,7a-dibromocholest-1,4-dien-3,6-dione 2, 2,2,7a-tribromocholest-4-en-3,6-dione, 3 and 2a,7a-dibromocholest-4-en-3,6-dione 4 by various spectroscopic methods.

Page(s): 1027-1031

Synthesis, antimicrobial, insecticidal and anthelmintic activity studies of some new alkyl/aryl 6-(4-(4-(4-methyl-1H-1,2,3-triazol-1-yl)phenyl amino)phenyl)-N²,N⁴-bis(4-methoxyphenyl)-1,3,5-triazin-2,4-diamine carbamic acid ester derivatives

Thu, 28 Jun 2012 22:58:59 GMT

Title: Synthesis, antimicrobial, insecticidal and anthelmintic activity studies of some new alkyl/aryl 6-(4-(4-(4-methyl-1H-1,2,3-triazol-1-yl)phenyl amino)phenyl)-N²,N⁴-bis(4-methoxyphenyl)-1,3,5-triazin-2,4-diamine carbamic acid ester derivatives

Authors: Gautam, Nidhi; Chourasia, O P

Abstract: New carbamic acid ester derivatives containing 1,2,3-triazole nucleus have been synthesized and their antimicrobial, insecticidal and anthelmintic activity investigated. 6-(4-(4-Methyl-1H-5-carbonyl azide-1,2,3-triazol-1-yl)phenyl amino)phenyl-N²-N⁴-bis(-methoxy phenyl)-1,3,5-triazin-2, 4-diamine has been used as a precursor to synthesize some new alkyl/aryl 6-(4-(4-methyl-1H-1,2,3-triazol-1-yl)phenylamino)phenyl-N²,N⁴–bis(4-methoxyphenyl)- 1,3,5-triazin-2,4-diamine carbamic acid ester derivatives. The compounds have been screened for their antibacterial efficacy against B. subtilis, E. coli, K. pneumonie and S. aureus and for their antifungal efficacy against A. flavus, A. niger, F. oxysporum and Trichoderma viridae. Insecticidal activity against Periplaneta americana and anthelmintic activity against Pheretima posthuma (Indian adult earthworm) have been studied.

Page(s): 1020-1026

NISCAIR Online Periodicals Repository Collection: IJC-B Vol.51B(07) [July 2012]

Potassium phosphate catalyzed efficient synthesis of 3-carboxycoumarins

Fuller’s earth catalyzed rapid synthesis of bis(indolyl)methanes under solvent free condition

Studies on the reaction of N-bromo­succinimide in dimethylsulphoxide: Part X — Action on cholest-4-en-3,6-dione

Synthesis, antimicrobial, insecticidal and anthelmintic activity studies of some new alkyl/aryl 6-(4-(4-(4-methyl-1H-1,2,3-triazol-1-yl)phenyl amino)phenyl)-N2,N4-bis(4-methoxyphenyl)-1,3,5-triazin-2,4-diamine carbamic acid ester derivatives

Studies on the reaction of N-bromosuccinimide in dimethylsulphoxide: Part X — Action on cholest-4-en-3,6-dione

Synthesis, antimicrobial, insecticidal and anthelmintic activity studies of some new alkyl/aryl 6-(4-(4-(4-methyl-1H-1,2,3-triazol-1-yl)phenyl amino)phenyl)-N²,N⁴-bis(4-methoxyphenyl)-1,3,5-triazin-2,4-diamine carbamic acid ester derivatives