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Volumn 45, Issue 2, 2004, Pages 313-316

Smart cleavage reactions: The synthesis of benzimidazoles and benzothiazoles from polymer-bound esters

Author keywords

Cleavage; Heterocycles; Lewis acid; Solid phase

Indexed keywords

1,2 PHENYLENEDIAMINE; BENZIMIDAZOLE DERIVATIVE; BENZOTHIAZOLE DERIVATIVE; ESTER; LEWIS ACID; PHENOL DERIVATIVE; POLYMER;

EID: 0347627369     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2003.10.168     Document Type: Article
Times cited : (146)

References (26)
  • 15
    • 0026552201 scopus 로고
    • This paper reports the reaction between 4-pyridylacetic methyl ester with 1,2-phenylenediamine, the desired benzimidazole product was obtained after heating to 170-180 °C in the presence of polyphosphoric acid for 4.5 h
    • Alcalde E., Dinares I., Perez-Garcia L., Roca T. Synthesis. 1992;395. This paper reports the reaction between 4-pyridylacetic methyl ester with 1,2-phenylenediamine, the desired benzimidazole product was obtained after heating to 170-180 °C in the presence of polyphosphoric acid for 4.5 h.
    • (1992) Synthesis , pp. 395
    • Alcalde, E.1    Dinares, I.2    Perez-Garcia, L.3    Roca, T.4
  • 23
    • 85030915345 scopus 로고    scopus 로고
    • note
    • ® and concentrated under reduced pressure. The crude product was then purified by chromatography (gradient elution, 50% toluene/ethyl acetate to 75% toluene ethyl acetate) to give N-methyl-2-phenyl-benzimidazole 9 (58.9 mg, 93%) as a white solid.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.