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Volumn 69, Issue 26, 2004, Pages 9085-9089

Synthesis and relative stability of 3,5-diacyl-4,5-dihydro-1H-pyrazoles prepared by dipolar cycloaddition of enones and α-diazoketones

Author keywords

[No Author keywords available]

Indexed keywords

ADDITION REACTIONS; ISOMERS; KETONES; MOLECULAR STRUCTURE; PROBABILITY DENSITY FUNCTION; SYNTHESIS (CHEMICAL);

EID: 10844240709     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo048741w     Document Type: Article
Times cited : (37)

References (35)
  • 1
    • 0037872649 scopus 로고    scopus 로고
    • For examples of the total synthesis of natural products with use of α-diazocarbonyl compounds, see: (a) Sawada, T.; Fuerst, D. E.; Wood, J. L. Tetrahedron Lett. 2003, 44, 4919.
    • (2003) Tetrahedron Lett. , vol.44 , pp. 4919
    • Sawada, T.1    Fuerst, D.E.2    Wood, J.L.3
  • 6
    • 0000550687 scopus 로고    scopus 로고
    • For reviews of metal-catalyzed reactions of α-diazocarbonyl compounds, see: (a) Padwa, A.; Weingarten, M. D. Chem. Rev. 1996, 96, 223.
    • (1996) Chem. Rev. , vol.96 , pp. 223
    • Padwa, A.1    Weingarten, M.D.2
  • 31
    • 10844251073 scopus 로고    scopus 로고
    • note
    • Depending on how the reactions are worked up and the length of time the compounds spend in the air on the column, one can get differing amounts of pyrazolines and pyrazoles. For example, rapid chromatography of the reaction mixture shown in Scheme 5 allows the isolation of only the pyrazolines 6a and 6b without any pyrazole 4c being formed. In the reactions shown in Scheme 3, the compounds were left on the column for a longer period of time and therefore more of the pyrazoles were formed.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.