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Knight, D.B.3
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0030867113
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For other regioselective [2 + 4] cycloadditions of fulvenes to electron-deficient dienes, see: (a) Houk, K. N.; Luskus, L. J. J. Org. Chem. 1973, 38, 3836. (b) Bimanand, A. Z.; Gupta, Y. N.; Doa, M. J.; Eaton, T. A.; Houk, K. N. J. Org. Chem. 1983, 48, 403. (c) Lewis, N. J.; Collins, W. J.; Knight, D. B. J. Med. Chem. 1979, 22, 1505. (d) Nair, V.; Anilkumar, G.; Radhakrishnan, K. V.; Sheela, K. C.; Rath, N. P. Tetrahedron 1997, 53, 17361.
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(1997)
Tetrahedron
, vol.53
, pp. 17361
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Nair, V.1
Anilkumar, G.2
Radhakrishnan, K.V.3
Sheela, K.C.4
Rath, N.P.5
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47
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6444220706
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note
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TinyClave (Büchiglassuster) is a miniature laboratory autoclave for safe small-scale experiment under pressure. It allows one to run chemical reactions in organic media under pressure up to 10 bar and 150°C.
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48
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6444241370
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Selectivity may also be explained by the LUMO (azadiene) and HOMO (fulvene) coefficients; see ref 2c.
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49
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37049086294
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Croce, P.; Ferraccioli, R.; Rosa, C. L. J. Chem. Soc., Perkin Trans. 1 1994, 2499.
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(1994)
L. J. Chem. Soc., Perkin Trans. 1
, pp. 2499
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Croce, P.1
Ferraccioli, R.2
Rosa, C.3
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50
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6444227979
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2, 78%); see: Marchand, E.; Morel, G.; Sinbandhit, S. Eur. J. Org. Chem. 1942, 7, 1729.
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(1942)
Eur. J. Org. Chem.
, vol.7
, pp. 1729
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Marchand, E.1
Morel, G.2
Sinbandhit, S.3
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51
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6444243532
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13C NMR, DEPT, IR, MS, and HRMS. In most cases, COSY and HMQC spectra were also obtained. Yields refer to spectroscopically and chromatographically homogeneous (>95%) materials.
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52
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6444242615
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note
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2)].
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53
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6444222081
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note
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2)].
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