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Volumn 101, Issue 2, 1997, Pages 227-233

IMOMO(G2MS): A new high-level G2-like method for large molecules and its applications to diels-alder reactions

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; BUTADIENE; CHEMICAL REACTIONS; CONFORMATIONS; CORRELATION METHODS; ETHYLENE; MATHEMATICAL MODELS;

EID: 0031560545     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp963019q     Document Type: Article
Times cited : (117)

References (51)
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    • (1985) Tetrahedron Lett. , vol.26 , pp. 2297
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  • 18
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    • For example: (a) Brown, F. K.; Houk, K. N. Tetrahedron Lett. 1985, 26, 2297. (b) Gajewski, J. J.; Peterson, K. B.; Kagel, J. R. J. Am. Chem. Soc. 1987, 109, 5545. (c) Brown, F. K.; Houk, K. N.; Burnell, D. J.; Valenta, Z. J. Org. Chem. 1987, 52, 3050. (d) Loncharich, R. J.; Brown, F. K.; Houk, K. N. J. Org. Chem. 1989, 54, 1129.
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  • 19
    • 0000131346 scopus 로고
    • For example: (a) Brown, F. K.; Houk, K. N. Tetrahedron Lett. 1985, 26, 2297. (b) Gajewski, J. J.; Peterson, K. B.; Kagel, J. R. J. Am. Chem. Soc. 1987, 109, 5545. (c) Brown, F. K.; Houk, K. N.; Burnell, D. J.; Valenta, Z. J. Org. Chem. 1987, 52, 3050. (d) Loncharich, R. J.; Brown, F. K.; Houk, K. N. J. Org. Chem. 1989, 54, 1129.
    • (1987) J. Org. Chem. , vol.52 , pp. 3050
    • Brown, F.K.1    Houk, K.N.2    Burnell, D.J.3    Valenta, Z.4
  • 20
    • 0001585895 scopus 로고
    • For example: (a) Brown, F. K.; Houk, K. N. Tetrahedron Lett. 1985, 26, 2297. (b) Gajewski, J. J.; Peterson, K. B.; Kagel, J. R. J. Am. Chem. Soc. 1987, 109, 5545. (c) Brown, F. K.; Houk, K. N.; Burnell, D. J.; Valenta, Z. J. Org. Chem. 1987, 52, 3050. (d) Loncharich, R. J.; Brown, F. K.; Houk, K. N. J. Org. Chem. 1989, 54, 1129.
    • (1989) J. Org. Chem. , vol.54 , pp. 1129
    • Loncharich, R.J.1    Brown, F.K.2    Houk, K.N.3
  • 21
    • 0000193645 scopus 로고
    • For example: (a) Jorgenson, W. L.; Lim, D.; Blake, J. F. J. Am. Chem. Soc. 1993, 115, 2936. (b) Froese, R. D. J.; Organ, M. G.; Goddard, J. D.; Stack, T. D. P.; Trost, B. M. J. Am. Chem. Soc. 1995, 117, 10931.
    • (1993) J. Am. Chem. Soc. , vol.115 , pp. 2936
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  • 26
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    • For example: (a) Basilevsky, M. V.; Tikhomirov, V. A.; Chlenov, I. E. Theor. Chim. Acta 1971, 27, 2791. (b) Kikuchi, O. Tetrahedron 1971, 27, 2791. (c) Marshall, J. A.; Grote, J.; Audia, J. E. J. Am. Chem. Soc. 1987, 109, 1186.
    • (1971) Theor. Chim. Acta , vol.27 , pp. 2791
    • Basilevsky, M.V.1    Tikhomirov, V.A.2    Chlenov, I.E.3
  • 27
    • 0012140031 scopus 로고
    • For example: (a) Basilevsky, M. V.; Tikhomirov, V. A.; Chlenov, I. E. Theor. Chim. Acta 1971, 27, 2791. (b) Kikuchi, O. Tetrahedron 1971, 27, 2791. (c) Marshall, J. A.; Grote, J.; Audia, J. E. J. Am. Chem. Soc. 1987, 109, 1186.
    • (1971) Tetrahedron , vol.27 , pp. 2791
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  • 28
    • 33845282786 scopus 로고
    • For example: (a) Basilevsky, M. V.; Tikhomirov, V. A.; Chlenov, I. E. Theor. Chim. Acta 1971, 27, 2791. (b) Kikuchi, O. Tetrahedron 1971, 27, 2791. (c) Marshall, J. A.; Grote, J.; Audia, J. E. J. Am. Chem. Soc. 1987, 109, 1186.
    • (1987) J. Am. Chem. Soc. , vol.109 , pp. 1186
    • Marshall, J.A.1    Grote, J.2    Audia, J.E.3
  • 33
    • 85033168539 scopus 로고    scopus 로고
    • note
    • The higher order correlation calculation in the G2, G2MP2, and G2(MP2,SVP) schemes is QCISD(T).
  • 39
    • 85033160327 scopus 로고    scopus 로고
    • note
    • For the 32 molecules in Table 1, the maximal B3LYP/6-31G(d) energy difference between the B3LYP/6-311G(d,p) and B3LYP/6-31G(d) optimized geometries is less than 0.1 kcal/mol. The computational savings in the optimizations are 4-5 times.
  • 46
    • 85033168636 scopus 로고    scopus 로고
    • note
    • For the transition states, we use the terms HH/HT and endo/exo for the regio- and stereoselectivity, respectively, and for the products, 1,2/ 1,3 and cis/trans, respectively. We sometimes interchange these terms to avoid confusion.
  • 50
    • 0002464749 scopus 로고
    • Solvent effects appear to be important in this reaction as a range of values from 11.8-14.2 have been predicted in a separate study (Dewar, M. J. S.; Pyron, R. S. J. Am. Chem. Soc. 1970, 92, 3098).
    • (1970) J. Am. Chem. Soc. , vol.92 , pp. 3098
    • Dewar, M.J.S.1    Pyron, R.S.2
  • 51
    • 85033172030 scopus 로고    scopus 로고
    • note
    • For example, in butadiene dimerization, experiments at 446-660 K led to a barrier of 23.7 kcal/mol (ref 21b above), while experiments at 691-923 K led to a barrier of 26.8 kcal/mol (ref 17 above).


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