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Volumn , Issue 28, 2007, Pages 4699-4705

Investigating direct access to 2-oxospiro[4.5]decanones via 6π-electrocyclisation

Author keywords

2 oxospiro 4.5 decan 1 one; Calculations; Electrocyclic reactions; Microwave irradiation; Spirolactones

Indexed keywords


EID: 35348850316     PISSN: 1434193X     EISSN: 10990690     Source Type: Journal    
DOI: 10.1002/ejoc.200700367     Document Type: Article
Times cited : (23)

References (41)
  • 31
    • 35348823088 scopus 로고    scopus 로고
    • All calculations were performed with the Gaussian program package: M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery Jr, T. Vreven, K. N. Kudin, J. C. Burant, J. M. Millam, S. S. Iyengar, J. Tomasi, V. Barone, B. Mennucci, M. Cossi, G. Scalmani, N. Rega, G. A. Petersson, H. Nakatsuji, M. Hada, M. Ehara, K. Toyota, R. Fukuda, J. Hasegawa, M. Ishida, T. Nakajima, Y. Honda, O. Kitao, H. Nakai, M. Klene, X. Li, J. E. Knox, H. P. Hratchian, J. B. Cross, V. Bakken, C. Adamo, J. Jaramillo, R. Gomperts, R. E. Stratmann, O. Yazyev, A. J. Austin, R. Cammi, C. Pomelli, J. W. Ochterski, P. Y. Ayala, K. Morokuma, G. A. Voth, P. Salvador, J. J. Dannenberg, V. G. Zakrzewski, S. Dapprich, A. D. Daniels, M. C. Strain, O. Farkas, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. V. Ortiz, Q. Cui, A. G. Baboul, S. Clifford, J. Cioslowski, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. L. Martin, D. J. Fox, T. Keith
    • All calculations were performed with the Gaussian program package: M. J. Frisch, G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery Jr, T. Vreven, K. N. Kudin, J. C. Burant, J. M. Millam, S. S. Iyengar, J. Tomasi, V. Barone, B. Mennucci, M. Cossi, G. Scalmani, N. Rega, G. A. Petersson, H. Nakatsuji, M. Hada, M. Ehara, K. Toyota, R. Fukuda, J. Hasegawa, M. Ishida, T. Nakajima, Y. Honda, O. Kitao, H. Nakai, M. Klene, X. Li, J. E. Knox, H. P. Hratchian, J. B. Cross, V. Bakken, C. Adamo, J. Jaramillo, R. Gomperts, R. E. Stratmann, O. Yazyev, A. J. Austin, R. Cammi, C. Pomelli, J. W. Ochterski, P. Y. Ayala, K. Morokuma, G. A. Voth, P. Salvador, J. J. Dannenberg, V. G. Zakrzewski, S. Dapprich, A. D. Daniels, M. C. Strain, O. Farkas, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. V. Ortiz, Q. Cui, A. G. Baboul, S. Clifford, J. Cioslowski, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. L. Martin, D. J. Fox, T. Keith, M. A. AlLaham, C. Y. Peng, A. Nanayakkara, M. Challacombe, P. M. W. Gill, B. Johnson, W. Chen, M. W. Wong, C. Gonzalez, J. A. Pople, Gaussian 03, Revision B.05, Gaussian, Inc., Wallingford CT, 2004.
  • 34
    • 35348842096 scopus 로고    scopus 로고
    • J. W. Ochterski, http://www.gaussian.com/g_whitepap/thermo.htm; last accessed: 2007-06-28.
    • J. W. Ochterski, http://www.gaussian.com/g_whitepap/thermo.htm; last accessed: 2007-06-28.
  • 35
    • 35348900122 scopus 로고    scopus 로고
    • The [1,5]-H shift products 76-78 and 56, 85, and 86 were calculated stemming from a thermal process instead of the photochemical since the latter should be disfavoured and the thermal activation energy could also be provided by the irradiation. The transition states for these thermal [1,5]-H shifts and the energies thereof have not been calculated, but should be similar to the values obtained for the thermal rearrangement of the thermally induced cyclisation products.
    • The [1,5]-H shift products 76-78 and 56, 85, and 86 were calculated stemming from a thermal process instead of the photochemical since the latter should be disfavoured and the thermal activation energy could also be provided by the irradiation. The transition states for these thermal [1,5]-H shifts and the energies thereof have not been calculated, but should be similar to the values obtained for the thermal rearrangement of the thermally induced cyclisation products.


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