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Volumn 49, Issue 3, 2008, Pages 495-499

A novel hydride-mediated reductive rearrangement of amide: a facile synthesis of pyrimidyl and triazinyl amines

Author keywords

[No Author keywords available]

Indexed keywords

AMIDE; AMINE; BENZAMIDE DERIVATIVE; LITHIUM DERIVATIVE; PYRIMIDINE DERIVATIVE; SODIUM DERIVATIVE; TRIAZINE DERIVATIVE;

EID: 37249050510     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2007.11.096     Document Type: Article
Times cited : (4)

References (32)
  • 16
    • 0003607021 scopus 로고
    • Katritzky A.R., and Rees C.W. (Eds), Pergamon, Oxford
    • Brown D.J. In: Katritzky A.R., and Rees C.W. (Eds). Comprehensive Heterocyclic Chemistry Vol. 3, Chapter 2.13 (1984), Pergamon, Oxford
    • (1984) Comprehensive Heterocyclic Chemistry , vol.3 Chapter 2.13
    • Brown, D.J.1
  • 19
  • 23
    • 37249065873 scopus 로고    scopus 로고
    • note
    • 4: To a suspension solution of lithium aluminum hydride (9 mmol, 343 mg) or sodium borohydride (18 mmol, 702 mg) in tetrahydrofuran (20 mL) was added dropwise 1 (1.5 mmol) in tetrahydrofuran (15 mL) at room temperature for about 20 min. The mixture was refluxed for 2-4 h. Afterwards, the reaction was then cooled and quenched by the careful addition of ice water (15 mL) and sodium hydroxide (10%, 15 mL) for 1 h. The solid was filtered off under reduced pressure and washed with ethyl acetate (3 × 20 mL). The organic layer was washed with brine (3 × 20 mL) and dried over anhydrous magnesium sulfate. The solvent was removed under vacuo and the residue was purified by column chromatography on silica gel with petroleum ether-ethyl acetate (10:1) to afford the corresponding products 2 in 52-95% yield.
  • 26
    • 37249045162 scopus 로고    scopus 로고
    • The most popular synthetic method of such substituted pyrimidine amines is nucleophilic substitution of heterocyclic halides with neutral nitrogen nucleophiles with bases as catalysts. (a) Eur. Patent, 224339, 1987.
  • 27
    • 37249033365 scopus 로고    scopus 로고
    • PCT Int. Patent, 2006068213, 2006.
  • 31
    • 37249054683 scopus 로고    scopus 로고
    • note
    • 3 in refluxing THF or DMSO. However, trace of amine 2a was obtained in THF under reflux for 10 h, and in refluxing DMSO the reaction afforded 2a only in 20% yield.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.