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0343084679
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note
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N2′ reaction of dilithium di-tert-butylcyanocuprate with propargylic benzoates 8, which were obtained, uneventfully, by coupling of aldehydes 6 with the known enyne acetal 5 (ref. 7) followed by esterification of the propargyl alcohols 7.
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13
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0007297814
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Abrams, G. D.; Abrams, S. R.; Nelson, L. A. K.; Gusta, L. V. Tetrahedron 1990, 46, 5543.
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Nelson, L.A.K.3
Gusta, L.V.4
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0000646877
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Nazarov and related cationic cyclizations
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Trost, B. M.; Fleming, I.; Paquette, L. A., Eds. Pergamon Press: Oxford
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(a) Denmark, S. E. Nazarov and Related Cationic Cyclizations, in Comprehensive Organic Synthesis, Vol. 5; Trost, B. M.; Fleming, I.; Paquette, L. A., Eds. Pergamon Press: Oxford, 1991, pp. 751-784.
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Denmark, S.E.1
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The nazarov cyclization
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Paquette, L. A., Ed.; Wiley: New York
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(b) Habermas, K. L.; Denmark, S. E.; Jones, T. K. The Nazarov Cyclization, in Organic Reactions, vol. 45; Paquette, L. A., Ed.; Wiley: New York, 1994, pp. 1-158.
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(b) Tius, M. A.; Astrab, D. P.; Fauq, A. H.; Ousset, J-B.; Trehan, S. J. Am. Chem. Soc. 1986, 108, 3438.
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(b) For a description of the density functionals as implemented in the Gaussian series of programs, see: Johnson, B. G.; Gill, P. M. W.; Pople, J. A. J. Chem. Phys. 1993, 98, 5612.
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Johnson, B.G.1
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Gaussian 94 (Revision A.1). Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Gill, P. M. W.; Johnson, B. G.; Robb, M. A.; Cheeseman, J. R.; Keith, T. A.; Petersson, G. A.; Montgomery, J. A.; Raghavachari, K.; Al-Laham, M. A.; Zakrzewski, V. G.; Ortiz, J. V.; Foresman, J. B.; Cioslowski, J.; Stefanov, B. B.; Nanayakkara, A.; Challacombe, M.; Peng, C. Y.; Ayala, P. Y.; Chen, W.; Wong, M. W.; Andres, J. L.; Replogle, E. S.; Gomperts, R.; Martin, R. L.; Fox, D. J.; Binkley, J. S.: Defrees, D. J.; Baker, J.; Stewart, J. P.; Head-Gordon, M.; Gonzalez, C.; Pople, J. A. Gaussian, Inc.: Pittsburgh, PA, 1995.
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Trucks, G.W.2
Schlegel, H.B.3
Gill, P.M.W.4
Johnson, B.G.5
Robb, M.A.6
Cheeseman, J.R.7
Keith, T.A.8
Petersson, G.A.9
Montgomery, J.A.10
Raghavachari, K.11
Al-Laham, M.A.12
Zakrzewski, V.G.13
Ortiz, J.V.14
Foresman, J.B.15
Cioslowski, J.16
Stefanov, B.B.17
Nanayakkara, A.18
Challacombe, M.19
Peng, C.Y.20
Ayala, P.Y.21
Chen, W.22
Wong, M.W.23
Andres, J.L.24
Replogle, E.S.25
Gomperts, R.26
Martin, R.L.27
Fox, D.J.28
Binkley, J.S.29
Defrees, D.J.30
Baker, J.31
Stewart, J.P.32
Head-Gordon, M.33
Gonzalez, C.34
Pople, J.A.35
more..
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0026059629
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For other theoretical approaches to the Nazarov cyclization, see: (a) Smith, D. A.; Ulmer, C. W. Tetrahedron Lett. 1991, 32, 725.
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Smith, D.A.1
Ulmer, C.W.2
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26
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0343956614
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note
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13C NMR, IR, UV) were obtained for all new substances reported in this paper. Elemental compositions were determined by high resolution mass spectroscopy after purification by HPLC.
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