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Volumn 20, Issue 12, 2010, Pages 3664-3668

Facile and efficient aromatization of 1,4-dihydropyridines with M(NO 3)2·XH2O, TNCB, TBAP and HMTAI and preparation of deuterium labeled dehydronifedipine from nifedipine-d3

Author keywords

Aromatization; Hantzsch's 1,4 dihydropyridines; Hexamethylenetetramine iodine; Tetra n butylammonium periodate; Trinitratocerium bromate

Indexed keywords

1,4 DIHYDROPYRIDINE; ACETIC ACID; DEHYDRONIFEDIPINE; DEUTERIUM; METHANOL; NIFEDIPINE; NITRIC ACID DERIVATIVE; OXIDIZING AGENT;

EID: 77954213886     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2010.04.096     Document Type: Article
Times cited : (20)

References (124)
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    • We have tested number of solvents such as benzene, dichloromethane, acetonitrile and acetic acid/water.
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    • note
    • 4, and concentrated under reduced pressure to obtain crude product which was further purified by silica gel column chromatography using ethyl acetate-hexanes as mobile phase yielded corresponding pyridine. General procedure for oxidation of Hantzsch's 1,4-DHPs (1g) by HMTAI in methanol: An HMTAI (167 mg, 0.26 mmol) was added to the solution of 1,4-DHP (1g) (50 mg, 0.13 mmol) in 7.0 mL methanol and it was heated at reflux for given time. After completion of reaction, reaction mixture was cooled down to rt and filtered through short Celite pad. Methanol was removed under reduced pressure to obtain crude product which was further purified by silica gel column using ethyl acetate-hexane as mobile phase yielded corresponding pyridine.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.