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Volumn 69, Issue 5, 1996, Pages 1353-1362

New Method for Derivatization of Squaric Acid to Highly Substituted Cyclobutenones: Lewis Acid-Catalyzed Reaction of Cyclobutene-1,2-dione Monoacetal and Its Vinylog with Unsaturated Organosilanes, and Subsequent Ring Transformation of the Adducts

Author keywords

[No Author keywords available]

Indexed keywords

SQUARIC ACID DERIVATIVE;

EID: 0030023660     PISSN: 00092673     EISSN: None     Source Type: Journal    
DOI: 10.1246/bcsj.69.1353     Document Type: Article
Times cited : (10)

References (56)
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    • For recent examples, see: a) H. Nakazumi, K. Natsukawa, K. Nakatani, and K. Isagawa, Angew. Chem., Int. Ed. Engl., 33, 1001 (1994) b) C. W. Dirk, W. C. Herdon, F. Cervantes-Lee, H. Selnau, S. Martinez, P. Kalamegham, A. Tan, G. Campos, M. Velez, J. Zyss, I. Ledoux, and L.-T. Cheng, J. Am. Chem. Soc., 117, 2214 (1995) c) H. Chen, K.-Y. Law, J. Perlstein, and D. G. Whitten, J. Am. Chem. Soc., 117, 7257 (1995).
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  • 48
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    • note
    • Cyclobutenones 121 and 19 were obtained as a diastereomeric mixture (see Experimental section).
  • 52
    • 85033829116 scopus 로고    scopus 로고
    • note
    • A semiempirical calculation (RHF/PM3: see, Ref. 20) was carried out using MOPAC version 94.10 packaged in the CAChe Version 3.7.
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    • note
    • In the case of a related 4-hydroxycyclobutenone, a 5-acylmethyl-2(5H)-furanone was obtained as a thermal rearrangement product (Ref. 7b).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.