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(c) Drewes, S. E.; Roos, G. H. P. Tetrahedron 1988,44, 4653. (d) Basavaiah, D.; Rao, P. D.; Hyma, R. S. Tetrahedron 1996,52, 8001.
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Mateus, C.R.1
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Almeida, N.-P.5
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Sugihara, T.2
Esumi, T.3
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Tetrahedron Lett
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Basavaiah, D.1
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A mri, H.; Rambaud, M.; Villieras, J. Tetrahedron Lett. 1989 30, 7381.
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(i) A mri, H.; Rambaud, M.; Villieras, J. Tetrahedron Lett. 1989 30, 7381.
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13
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0037169021
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and references cited therein;
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(a) Aggarawal, V. K.; Dean, D. K.; Mereu, A. and Williams, R. J. Org. Chem. 2002,67, 510 and references cited therein;
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J. Org. Chem
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Aggarawal, V.K.1
Dean, D.K.2
Mereu, A.3
Williams, R.4
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16
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46149093623
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For refewces prior to 1906 see Ref Id;
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For refewces prior to 1906 see Ref Id;
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17
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0037423177
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(a) Yang, K.-S.; Lee, W.-D; Pan, J.-F.; Chen, K. J. Org. Chem. 2003, 68, 915;
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Yang, K.-S.1
Lee, W.-D.2
Pan, J.-F.3
Chen, K.4
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(b) Aggarwal, V. K.; Castro, A. M. M.; Mereu, A.; Adams, H. Tetrahedton Lett. 2002, 43, 1577;
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Aggarwal, V.K.1
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Brzezinski, L.J.1
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Leahy, J.W.3
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Doisneau, G.J.M.2
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Sanganee, H.J.4
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(1994)
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Phosphorus, Sulfur, and Silicon
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Phosphorus, Sulfur, and Silicon
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Badrian, A.3
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Synlett
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Davies, S.G.2
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Prasad, R.S.5
Sanganee, H.J.6
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(a) Ploux, O.; Caruso, M.; Chassaing, G.; Marquet, A. J. Org. Chem. 1988, 53, 3154
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(1988)
J. Org. Chem
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Ploux, O.1
Caruso, M.2
Chassaing, G.3
Marquet, A.4
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0028215142
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(b) Garnet, P.; Dogan, O.; Pillai, S. Tetrahedron Lett. 1994, 35, 1653.
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(1994)
Tetrahedron Lett
, vol.35
, pp. 1653
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-
Garnet, P.1
Dogan, O.2
Pillai, S.3
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38
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46149086050
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-
Preparation of (R)-3-(2-Bromo-3-phenyl-acryloyl, 5,5-dimethyl-4-phenyl-oxazolidin-2-one 3. To a solution of 2 (6.42 g, 20.0 mmol) in CHCl3 (60 mL) was added dropwise of Br2 (1.5 mL, 26 mmol) dissolved in CHCl3 (15 mL, The resulting mixture was stirred at room temperature and rapidly (3 h) discolorated. After evaporation of the solvent and unreacted Br2 in vacuo, the oily residue was dissolved again in CHCl3 (50 mL, To this solution was added dropwise of Et3N (5 g, 2.5 mol eq) and the resulting reaction mixture was stirred (3 h) till completion (judged by TLC, The cooled reaction mixture was diluted with CHCl3 and washed successively with 0.1 N HCl, sat. NaHCO3sol n, brine, and dried (MgSO4, Evaporation of the solvent gave the crude product. The product was recrystallized from petroleum ether/ethyl acetate 3:2 to give the title compound 3 (6.86 g, 17.2 mmol) as a
-
3): δ,1.04 (s, 3H), 1.65(s, 3H), 5.24(s, 1H), 7.20-7.64(m, 10H), 8.0(s, 1H).
-
-
-
-
39
-
-
0000209044
-
-
and references cited therein;
-
(a) Krief, A.; Laval, A.-M. Chem. Rev. 1999, 99, 745 and references cited therein;
-
(1999)
Chem. Rev
, vol.99
, pp. 745
-
-
Krief, A.1
Laval, A.-M.2
-
41
-
-
46149125694
-
-
Molander G. A. in Organic Reactions, ed. Paquette, L. A., John Wiley & Sons: New York, 1994, 46, pp. 211;
-
(c) Molander G. A. in Organic Reactions, ed. Paquette, L. A., John Wiley & Sons: New York, 1994, vol. 46, pp. 211; (
-
-
-
-
43
-
-
46149105131
-
-
4, and evaporated in vacuo to provide crude products which was purified by preparative TLC (petroleum ether/ethyl acetate 3:1) to give 4a and 5a.
-
4, and evaporated in vacuo to provide crude products which was purified by preparative TLC (petroleum ether/ethyl acetate 3:1) to give 4a and 5a.
-
-
-
-
44
-
-
46149088619
-
-
3): δ, 1-10 (s, 3H), 1.31 (d, J= 6.5, 3H), 1.60 (s, 3H), 4.11 (q, J= 6.5, 1H), 5.42 (s, 1H), 7.12-7.40 (m, 10H), 7.53 (s, 1H).
-
3): δ, 1-10 (s, 3H), 1.31 (d, J= 6.5, 3H), 1.60 (s, 3H), 4.11 (q, J= 6.5, 1H), 5.42 (s, 1H), 7.12-7.40 (m, 10H), 7.53 (s, 1H).
-
-
-
-
45
-
-
46149090508
-
-
3): δ, 0.95 (t, J=6.3, 3H), 1.10 (s, 3H), 1.34 (m, 2H), 1.60 (s, 3H), 3.93 (t, J= 6.6, 1H), 5.44 (a, 1H), 7.12-7.40 (m, 10H), 7.60 (s, 1H).
-
3): δ, 0.95 (t, J=6.3, 3H), 1.10 (s, 3H), 1.34 (m, 2H), 1.60 (s, 3H), 3.93 (t, J= 6.6, 1H), 5.44 (a, 1H), 7.12-7.40 (m, 10H), 7.60 (s, 1H).
-
-
-
-
46
-
-
46149101693
-
-
3): δ, 0.95 (s, 3H), 1.07 (s, 9H), 1.62 (s, 3H), 3.90 (s, 1H), 5.47 (s, 1H, 7.07-7.32 (m, 10H), 7.55 (s, 1H).
-
3): δ, 0.95 (s, 3H), 1.07 (s, 9H), 1.62 (s, 3H), 3.90 (s, 1H), 5.47 (s, 1H, 7.07-7.32 (m, 10H), 7.55 (s, 1H).
-
-
-
-
47
-
-
46149083648
-
-
3): δ, 0.96 (s, 3H), 1.06 (d, J= 6.5, 6H), 1.45 (m, 2H), 1.60 (s, 3H), 1.87 (m, 2H), 3.95 (m, 1H), 5.46 (a, 1H), 7.12-7.34 (m: 10H), 7.59 (s, 1H).
-
3): δ, 0.96 (s, 3H), 1.06 (d, J= 6.5, 6H), 1.45 (m, 2H), 1.60 (s, 3H), 1.87 (m, 2H), 3.95 (m, 1H), 5.46 (a, 1H), 7.12-7.34 (m: 10H), 7.59 (s, 1H).
-
-
-
-
48
-
-
46149097561
-
-
3): δ, 0.93 (s, 3H), 1.06 (d, J= 6.5, 6H), 1.63 (s, 3H), 1.96 (m, 1H), 3.90 (d, J= 6.6, 1H), 5.45 (s, 1H), 7.10-7.35 (m, 10H), 7.64 (s, 1H).
-
3): δ, 0.93 (s, 3H), 1.06 (d, J= 6.5, 6H), 1.63 (s, 3H), 1.96 (m, 1H), 3.90 (d, J= 6.6, 1H), 5.45 (s, 1H), 7.10-7.35 (m, 10H), 7.64 (s, 1H).
-
-
-
-
49
-
-
46149115556
-
-
3): δ, 0.94 (s, 3H), 0.98 (t, J= 6.4, 3H), 1.33 (m, 2H), 1.50 (m, 2H), 1.66 (s, 3H), 3.94 (m, 1H), 5.47 (s, 1H), 7.09-7.33 (m, 10H), 7.60 (s, 1H).
-
3): δ, 0.94 (s, 3H), 0.98 (t, J= 6.4, 3H), 1.33 (m, 2H), 1.50 (m, 2H), 1.66 (s, 3H), 3.94 (m, 1H), 5.47 (s, 1H), 7.09-7.33 (m, 10H), 7.60 (s, 1H).
-
-
-
-
50
-
-
46149090739
-
-
3): δ, 1.10 (s, 3H), 1.31 (d, J= 6.5, 3H), 1.62 (s, 3H), 4.11 (q, J= 6.5, IH), 5.46 (a, 1H), 7.12-7.40 (m, 10H), 7.55 (s, 1H).
-
3): δ, 1.10 (s, 3H), 1.31 (d, J= 6.5, 3H), 1.62 (s, 3H), 4.11 (q, J= 6.5, IH), 5.46 (a, 1H), 7.12-7.40 (m, 10H), 7.55 (s, 1H).
-
-
-
-
51
-
-
46149126800
-
-
3): δ, 0.99 (t, J=6.3, 3H), 1.12 (s, 3H), 1.35 (m, 2H), 1.63 (s, 3H), 3.95 (t, J= 6.6, 1H), 5.47 (a, 1H), 7.12-7.40 (m, 10H), 7.62 (s, 1H).
-
3): δ, 0.99 (t, J=6.3, 3H), 1.12 (s, 3H), 1.35 (m, 2H), 1.63 (s, 3H), 3.95 (t, J= 6.6, 1H), 5.47 (a, 1H), 7.12-7.40 (m, 10H), 7.62 (s, 1H).
-
-
-
-
52
-
-
46149125439
-
-
3): δ, 0.96 (s, 3H), 1.10 (s, 9H), 1.64 (s, 3H), 3.93 (s, 1H, 5.50 (s, 1H), 7.10-7.32 (m, 10H), 7.57 (a, 1H).
-
3): δ, 0.96 (s, 3H), 1.10 (s, 9H), 1.64 (s, 3H), 3.93 (s, 1H, 5.50 (s, 1H), 7.10-7.32 (m, 10H), 7.57 (a, 1H).
-
-
-
-
53
-
-
46149120039
-
-
3): δ, 0.98 (s, 3H), 1.10 (d, J= 6.5, 6H), 1.47 (m, 2H), 1.61 (s, 3H), 1.88 (m, 1H), 3.97 (m, 1H), 5.49, (s, 1H), 7.10-7.38 (m, 10H), 7.62 (s, 1H).
-
3): δ, 0.98 (s, 3H), 1.10 (d, J= 6.5, 6H), 1.47 (m, 2H), 1.61 (s, 3H), 1.88 (m, 1H), 3.97 (m, 1H), 5.49, (s, 1H), 7.10-7.38 (m, 10H), 7.62 (s, 1H).
-
-
-
-
54
-
-
46149098266
-
-
3): δ, 0.94 (s, 3H), 1.09 (d, J= 6.5, 6H), 1.67 (s, 3H), 1.92 (m, 1H), 3.92 (d, J= 6.6, 1H), 5.48 (s, 1H), 7.08-7.34 (m, 10H), 7.66 (s, 1H).
-
3): δ, 0.94 (s, 3H), 1.09 (d, J= 6.5, 6H), 1.67 (s, 3H), 1.92 (m, 1H), 3.92 (d, J= 6.6, 1H), 5.48 (s, 1H), 7.08-7.34 (m, 10H), 7.66 (s, 1H).
-
-
-
-
55
-
-
46149096660
-
-
3): δ, 0.95 (s, 3H), 0.99 (t, J= 6.4, 3H), 1.35 (m, 2H), 1.51 (m, 2H), 1.68 (s, 3H), 3.95 (m, 1H), 5.49 (s, 1H) 7.06-7.30 (m, 10H), 7.62 (s, 1H).
-
3): δ, 0.95 (s, 3H), 0.99 (t, J= 6.4, 3H), 1.35 (m, 2H), 1.51 (m, 2H), 1.68 (s, 3H), 3.95 (m, 1H), 5.49 (s, 1H) 7.06-7.30 (m, 10H), 7.62 (s, 1H).
-
-
-
-
56
-
-
0001311213
-
-
(a) Hruby, V. J.; Russell, K. C. and Nicolas, E. J. Org. Chem. 1993, 58, 766;
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(1993)
J. Org. Chem
, vol.58
, pp. 766
-
-
Hruby, V.J.1
Russell, K.C.2
Nicolas, E.3
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57
-
-
0001322727
-
-
(b) Lou, B.; Li, G.; Lung, F. and Hurby, V. J. J. Org. Chem. 1995, 60, 5509.
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(1995)
J. Org. Chem
, vol.60
, pp. 5509
-
-
Lou, B.1
Li, G.2
Lung, F.3
Hurby, V.J.4
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