Abstract
The electrocyclic reaction mechanisms of (Z)-1,2,4,6-heptatetraene and (2Z)-2,4,5-hexatriene-1-imine were studied by ab initio MO methods. The activation energy barrier height of the electrocyclic reaction of (Z)-1,2,4,6-heptatetraene is extremely a low energy barrier of 8.58 kcal/mol by a MRMP method. The activation energy barrier height of the electrocyclic ring closure of the trans-type of (2Z)-2,4,5-hexatriene-1-imine is lower by 3.18 kcal/mol than that of (Z)-1,2,4,6-heptatetraene. These low energy barriers come from some orbital interactions relating to allene group. For the reaction of (Z)-1,2,4,6-heptatetraene, the interactions of the vertical and side π orbitals of the allene group with another terminal π orbital are important at the transition state. The interaction of the vertical π orbital of allene group with a lone pair orbital of N atom is dominant at the transition state of the reaction of the trans-type of (2Z)-2,4,5- hexatriene-1-imine. The electrocyclic mechanism of the cis-type of (2Z)-2,4,5-hexatriene-1-imine was also discussed.
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Ross JA, Seiders RP and Lemal DM (1976). J Am Chem Soc 98: 4325
Chamorro EE and Notario R (2004). J Phys Chem A 108: 4099
deLera AR, Alvarez R, Lecea B, Torrado A and Cossio FP (2001). Angew Chem Int Ed 40: 557
deLera AR and Cossio FP (2002). Angew Chem Int Ed 41: 1150
Rodriguez-Otero J and Cabaleiro-Lago EM (2002). Angew Chem Int Ed 41: 1147
Rodriguez-Otero J and Cabaleiro-Lago EM (2003). Chem Eur J 9: 1837
Matito E, Poater J, Duran M and Sola M (2006). Chem Phys Chem 7: 111
Lopez CS, Faza ON, Cossio FP, York DM and deLera AR (2005). Chem Eur J 11: 1734
Roos B (1987) In: Lawley KP (ed) Advances in chemical physics, vol 69, part II, Wiley, New York, p 399
Hariharan PC and Pople JA (1973). Theor Chim Acta 28: 213
Sakai S (2006). J Phys Chem A 110: 9443
Nakano H (1993). J Chem Phys 99: 7983
Parr RG and Yang W (1989). Density functional theory of atoms and molecules. Oxford University Press, New York
Becke AD (1988). Phys Rev A 38: 3098
Lee C, Yang W and Parr RG (1988). Phys Rev B 37: 785
Fukui K (1970). J Phys Chem 74: 416
Ishida K, Morokuma K and Komornicki A (1977). J Chem Phys 66: 2153
Cundari TR and Gordon MS (1991). J Am Chem Soc 113: 5231
Sakai S (1997). J Phys Chem A 101: 1140
Sakai S (1998). Int J Quantum Chem 70: 291
Foster JM and Boys SF (1960). Rev Mod Phys 32: 300
Ivanic J and Ruedenberg K (2001). Theor Chem Acc 106: 339
Sakai S (1999). J Mol Struc (THEOCHEM) 461–462: 283
Sakai S (2000). J Phys Chem 104: 922
Sakai S (2000). Int J Quantum Chem 80: 1099
Sakai S (2000). J Phys Chem A 104: 11615
Sakai S (2002). Int J Quantum Chem 90: 549
Lee PS, Sakai S, Horstermann P, Roth WR, Kallel EA and Houk KN (2003). J Am Chem Soc 125: 5839
Sakai S and Nguyen MT (2004). J Phys Chem A 108: 9169
Sakai S (2006). J Phys Chem A 110: 6339
Sakai S (2006). J Phys Chem A 110: 12891
Schmidt MW, Buldridge KK, Boatz JA, Jensen JH, Koseki S, Gordon MS, Nguyen KA, Windus TL and Elbert ST (1990). QCPE Bull 10: 52
Frisch KJ, Trucks GW, Schlegel HB, Scuseria GE, Robb MA. Cheseman JR. Montgomery JA, Vreven T Jr, Kudin KN, Burant JC, Millam JM, Iyengar SS, Tomasi J, Barone V, Mennucci B, Cossi M, Scalmani G, Rega N, Petersson GA, Nakatsuji H, Hada M, Ehara M, Toyota K, Fukuda R, Hasegawa J, Ishida M, Nakajima T, Honda Y, Kitao O, Nakai H, Klene M, Li X, Knox E, Hratchian HP, oss JB, Adamo C, Jaramillo J, Gomperts R, Stratmann RE, Yazyev O, Austin AJ, Cammi R, Pomelli C, Ochterski JW, Ayala PY, Morokuma K, Voth GA, Salvador P, Dannenberg JJ, Zakrzewski VG, Dapprich S, Daniels AD, Strain MC, Farkas O, Malick DK, Rabuck D, Raghavachari K, Foresman JB, Ortiz JV, Cui Q, Baboul AG, Clifford S, Cioslowski J, Stefanov BB, Liu G, Liashenko A, Piskorz P, Komaromi I, Martin RL, Fox DJ, Keith T, Al-Laham MA, Peng CY, Nanayakkara A, Challacombe M, Gill PMW, Johnson B, Chen W, Wong MW, Gonzalez C, Pople JA (2003) Gaussian 03; Gaussian, Inc.: Pittsburgh, PA
Sakai S and Takane S (1999). J Phys Chem A 103: 2878
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Contribution of the Mark S. Gordon 65th Birthday Festschrift issue.
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Sakai, S. Criteria for pericyclic and pseudopericyclic character of electrocyclization of (Z)-1,2,4,6-heptatetraene and (2Z)-2,4,5-hexatriene-1-imine. Theor Chem Account 120, 177–183 (2008). https://doi.org/10.1007/s00214-007-0312-8
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DOI: https://doi.org/10.1007/s00214-007-0312-8