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Volumn 47, Issue 5, 2006, Pages 651-656

A novel and green protocol for two-carbon homologation: A direct amino acid/K2CO3-catalyzed four-component reaction of aldehydes, active methylenes, Hantzsch esters and alkyl halides

Author keywords

Amino acids; Hantzsch ester; Multi component reactions; Organocatalysis; Two carbon homologation

Indexed keywords

ALDEHYDE DERIVATIVE; AMINO ACID; CARBENE; ESTER DERIVATIVE; HALIDE; POTASSIUM CARBONATE;

EID: 29544435642     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2005.11.128     Document Type: Article
Times cited : (64)

References (27)
  • 17
    • 29544434189 scopus 로고    scopus 로고
    • Eur. Pat. Appl., 1993, 33 pp. CODEN: EPXXDW EP 562361 A1 19930929, CAN 120:244386 (patent written in English).
    • Hosokawa, A.; Ikeda, O.; Minami, N.; Kyomura, N. Eur. Pat. Appl., 1993, 33 pp. CODEN: EPXXDW EP 562361 A1 19930929, CAN 120:244386 (patent written in English).
    • Hosokawa, A.1    Ikeda, O.2    Minami, N.3    Kyomura, N.4
  • 21
    • 29544443419 scopus 로고    scopus 로고
    • note
    • The amino acids proline 4a and glycine 4b and Hantzsch ester 3a catalyzed the Knoevenagel condensation of aldehydes 1a-t with active methylenes 2a-h to furnish in situ Knoevenagel products 10 in very good yields (see Eq. 1)..
  • 26
    • 29544435551 scopus 로고    scopus 로고
    • note
    • 4), filtered and concentrated. Pure products 9 were obtained by column chromatography (silica gel, mixture of hexane/ethyl acetate).
  • 27
    • 29544441371 scopus 로고    scopus 로고
    • note
    • 2ClNa (M+Na): 298.0600; found: 298.0603.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.