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Volumn 72, Issue 18, 2007, Pages 6749-6752

Rearrangement of indene skeletons under mild conditions

Author keywords

[No Author keywords available]

Indexed keywords

DERIVATIVES; HIGH TEMPERATURE EFFECTS; IRRADIATION; ISOMERIZATION; ISOMERS; ULTRAVIOLET RADIATION;

EID: 34548715205     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo070537w     Document Type: Article
Times cited : (11)

References (53)
  • 1
    • 34548791315 scopus 로고
    • (a) Fitty, R. Ann. 1860, 114, 54.
    • (1860) Ann , vol.114 , pp. 54
    • Fitty, R.1
  • 7
    • 84970614397 scopus 로고
    • (b) Meerwein, H. Ann. 1914, 405, 129.
    • (1914) Ann , vol.405 , pp. 129
    • Meerwein, H.1
  • 11
    • 85172014828 scopus 로고
    • (a) Beckmann, E. Ber. 1886, 19, 988.
    • (1886) Ber , vol.19 , pp. 988
    • Beckmann, E.1
  • 12
    • 84943957701 scopus 로고
    • (b) Beckmann, E. Ber. 1887, 20, 1507.
    • (1887) Ber , vol.20 , pp. 1507
    • Beckmann, E.1
  • 29
    • 0009580379 scopus 로고    scopus 로고
    • Paquette, L. A.; Bay, E.; Yeh, Ku, A.; Rondan, N. G.; Houk, K. N. J. Org. Chem. 1982, 47, 422.
    • (d) Paquette, L. A.; Bay, E.; Yeh, Ku, A.; Rondan, N. G.; Houk, K. N. J. Org. Chem. 1982, 47, 422.
  • 46
    • 34548771353 scopus 로고    scopus 로고
    • In the presence of a catalytic amount of a rhenium complex, ReBr(CO)3(thf)]2, the rate of isomerization was increased and indene isomer 4a was obtained in 92% yield
    • 2, the rate of isomerization was increased and indene isomer 4a was obtained in 92% yield.
  • 47
    • 34548810973 scopus 로고    scopus 로고
    • The isomerization rates of 3a to 4a in N,N-dimethylformamide at 100°C for 3 h were changed when the reactions were carried out under different concentrations (4a: 43% (0.40 M); 38% (0.20 M); 27% (0.10 M); 18% (0.050 M).). One possible explanation of this result is that 4a was formed via intramolecular isomerization, which was influenced by the amino group of another molecule. In fact, by adding a base (1.0 equiv) in the reaction mixture, the accelerating effect of the base was observed (0.20 M, none: 38%; aniline: 61%; piperidine: >99%).
    • The isomerization rates of 3a to 4a in N,N-dimethylformamide at 100°C for 3 h were changed when the reactions were carried out under different concentrations (4a: 43% (0.40 M); 38% (0.20 M); 27% (0.10 M); 18% (0.050 M).). One possible explanation of this result is that 4a was formed via intramolecular isomerization, which was influenced by the amino group of another molecule. In fact, by adding a base (1.0 equiv) in the reaction mixture, the accelerating effect of the base was observed (0.20 M, none: 38%; aniline: 61%; piperidine: >99%).
  • 48
    • 34548756302 scopus 로고    scopus 로고
    • 80°C (4a: 90%; 3a: 10%); 50°C (4a: 17%; 3a: 82%).
    • 80°C (4a: 90%; 3a: 10%); 50°C (4a: 17%; 3a: 82%).
  • 49
    • 2942701792 scopus 로고    scopus 로고
    • For the theoretical calculations of the isomerization of indene derivatives via radical intermediates, see: Dubnikova, F, Lifshitz, A. Isr. J. Chem. 2003, 43, 325
    • For the theoretical calculations of the isomerization of indene derivatives via radical intermediates, see: Dubnikova, F.; Lifshitz, A. Isr. J. Chem. 2003, 43, 325.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.