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Volumn 48, Issue 29, 2007, Pages 4969-4972

Unexpected Ti-catalyzed formal intramolecular [4+4] cycloaddition of 1,1′-bi[(S*,S*)-6-(trimethylsilyl)cyclohepta-2,4-dien-1-yl]

Author keywords

1,3,5 Cycloheptatriene; Reductive silylation; Titanium tetrachloride; 4+4 Cycloadditions

Indexed keywords

1,3,5 CYCLOHEPTATRINE; ALKENE DERIVATIVE; SILICON DERIVATIVE; TITANIUM; UNCLASSIFIED DRUG;

EID: 34250340583     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2007.05.113     Document Type: Article
Times cited : (4)

References (36)
  • 3
    • 34250304203 scopus 로고    scopus 로고
    • note
    • + (12), 91 (52), 91 (52), 73 (100), 45 (25).
  • 4
    • 34250308703 scopus 로고
    • Direct silylation of guaiazulene gave tetrasilylated derivative (91%) and product of reductive dimerization (6%), see:
    • Direct silylation of guaiazulene gave tetrasilylated derivative (91%) and product of reductive dimerization (6%), see:. Félix G., Dunogues J., Petraud M., and Barbe B. J. Organomet. Chem. 258 (1983) C49-C51
    • (1983) J. Organomet. Chem. , vol.258
    • Félix, G.1    Dunogues, J.2    Petraud, M.3    Barbe, B.4
  • 5
    • 6244260973 scopus 로고
    • The reduction (Mg-2 HMPA-THF) of cycloheptatriene in the presence of dimethyldichlorosilane led to the 8,8-dimethyl-8-silabicyclo[3.2.1]octa-2,5-diene (12% yield), see:
    • The reduction (Mg-2 HMPA-THF) of cycloheptatriene in the presence of dimethyldichlorosilane led to the 8,8-dimethyl-8-silabicyclo[3.2.1]octa-2,5-diene (12% yield), see:. Laguerre M., Dunoguès J., and Calas R. Tetrahedron 34 (1978) 1823-1827
    • (1978) Tetrahedron , vol.34 , pp. 1823-1827
    • Laguerre, M.1    Dunoguès, J.2    Calas, R.3
  • 6
    • 34250375509 scopus 로고    scopus 로고
    • note
    • At the unrestricted B3LYP/6-311G(d, p) level and for radical 4, sums of the absolute values of 2p atomic coefficients of the HOMO showed that the greater values were borne by the C(1), C(3), and C(5) of the unsaturated system. The Mulliken atomic spin densities show a similar pattern {A figure is presented}.
  • 7
    • 34250371609 scopus 로고    scopus 로고
    • note
    • 3) δ 131.2 (d), 130.2 (d), 48.4 (d), 38.9 (d), 24.7 (t), 21.6 (d), -0.2 (q).
  • 8
    • 34250355457 scopus 로고    scopus 로고
    • note
    • -3: -0.219; 0.198.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.