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dc.contributor.authorKumar, N D Mahesh-
dc.contributor.authorDubey, P K-
dc.identifier.issn0975-0983(Online); 0376-4699(Print)-
dc.description.abstractCondensation of 2-mercaptobenzimidazoles 1a-e with α-bromoacetylbenzene 2 resulting in benzimidazolyl β-ketosulfides 3a-e followed by oxidation with hydrogen peroxide giving β-ketosulfones 7a-e and subsequent reduction with sodium borohydride yielding β-hydroxysulfones  9a-e is described. Reaction of 3a, 8a, 7a and 9a with DMS in the presence of potassium carbonate as base and tetrabutylammonium bromide (TBAB) as phase transfer catalyst, results in the regiospecific N-methylation of the NH of benzimidazole moiety giving 11a, 10a, 13a and 12a respectively.en_US
dc.publisherNISCAIR-CSIR, Indiaen_US
dc.rights CC Attribution-Noncommercial-No Derivative Works 2.5 Indiaen_US
dc.sourceIJC-B Vol.50B(06) [June 2011]en_US
dc.subjectRegiospecific alkylationen_US
dc.subjectPhase-transfer catalysten_US
dc.titleSynthesis and regiospecific methylation of new benzimidazolyl β-ketosulfones and β-hydroxysulfonesen_US
Appears in Collections:IJC-B Vol.50B(06) [June 2011]

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