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0030950922
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Preliminary communication of this work
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Preliminary communication of this work: Kitagawa, O.; Izawa, H.; Taguchi, T.; Shiro, M. Tetrahedron Lett. 1997, 38, 4447.
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Kitagawa, O.1
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Taguchi, T.3
Shiro, M.4
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15
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85034471198
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(S)-O-Acetyl lactic acid was purchased from Kanto Chemicals Co
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(S)-O-Acetyl lactic acid was purchased from Kanto Chemicals Co.
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16
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85034472340
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note
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Although anilides 3a and 3b were obtained in quantitative yield from N-allyl-o-tert-butyl aniline and (S)-acetoxypropionyl chloride (commercially available), the preparation through this method gave 1 with lower optical purity (82% ee).
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17
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85034483168
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(R)-2-Methylsuccinic acid was purchased from Azmax Co. Ltd
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(R)-2-Methylsuccinic acid was purchased from Azmax Co. Ltd.
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18
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0001523599
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Kitagawa, O.1
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Taguchi, T.4
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21
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0026573255
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We have also found α-iodination reaction of unsaturated carboxaraides and N-allylic enamides derivatives through a similar iodine-mediated activating process. (a) Kitagawa, O.; Hanano, T.; Hirata, T.; Inoue, T.; Taguchi, T. Tetrahadron Lett 1992, 33, 1299. (b) Kitagawa, O.; Kikuchi, N.; Hanano, T.; Aoki, K.; Yamazaki, T.; Okada, M.; Taguchi, T. J. Org. Chem. 1995, 60, 7161.
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Tetrahadron Lett
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Kitagawa, O.1
Hanano, T.2
Hirata, T.3
Inoue, T.4
Taguchi, T.5
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22
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0000636120
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We have also found α-iodination reaction of unsaturated carboxaraides and N-allylic enamides derivatives through a similar iodine-mediated activating process. (a) Kitagawa, O.; Hanano, T.; Hirata, T.; Inoue, T.; Taguchi, T. Tetrahadron Lett 1992, 33, 1299. (b) Kitagawa, O.; Kikuchi, N.; Hanano, T.; Aoki, K.; Yamazaki, T.; Okada, M.; Taguchi, T. J. Org. Chem. 1995, 60, 7161.
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Kitagawa, O.1
Kikuchi, N.2
Hanano, T.3
Aoki, K.4
Yamazaki, T.5
Okada, M.6
Taguchi, T.7
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23
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0001118395
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Morrison, J. D., Ed.; Academic Press: New York
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Reviews in relation to asymmetric Diels-Alder reactions using a chiral auxiliary; (a) Paquette, L. A. Asymmetric Synthesis; Morrison, J. D., Ed.; Academic Press: New York, 1984; Vol. 3, p 455. (b) Helmchen, G.; Karge, R.; Weetman, J. Modern Synthetic Methods; Scheffold, R., Ed.; Springer-Verlag: New York, 1986; Vol. 4, p 262. (c) Oppolzer, W. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon Press, Inc.: New York, 1991; Vol. 5, p 315. (d) Ishizuka, T.; Kunieda, T. Rev. Heteroat. Chem. 1996, 15, 227.
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Asymmetric Synthesis
, vol.3
, pp. 455
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Paquette, L.A.1
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24
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0001018322
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Scheffold, R., Ed.; Springer-Verlag: New York
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Reviews in relation to asymmetric Diels-Alder reactions using a chiral auxiliary; (a) Paquette, L. A. Asymmetric Synthesis; Morrison, J. D., Ed.; Academic Press: New York, 1984; Vol. 3, p 455. (b) Helmchen, G.; Karge, R.; Weetman, J. Modern Synthetic Methods; Scheffold, R., Ed.; Springer-Verlag: New York, 1986; Vol. 4, p 262. (c) Oppolzer, W. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon Press, Inc.: New York, 1991; Vol. 5, p 315. (d) Ishizuka, T.; Kunieda, T. Rev. Heteroat. Chem. 1996, 15, 227.
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(1986)
Modern Synthetic Methods
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Helmchen, G.1
Karge, R.2
Weetman, J.3
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25
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0000048258
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Trost, B. M., Fleming, I., Eds.; Pergamon Press, Inc.: New York
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Reviews in relation to asymmetric Diels-Alder reactions using a chiral auxiliary; (a) Paquette, L. A. Asymmetric Synthesis; Morrison, J. D., Ed.; Academic Press: New York, 1984; Vol. 3, p 455. (b) Helmchen, G.; Karge, R.; Weetman, J. Modern Synthetic Methods; Scheffold, R., Ed.; Springer-Verlag: New York, 1986; Vol. 4, p 262. (c) Oppolzer, W. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon Press, Inc.: New York, 1991; Vol. 5, p 315. (d) Ishizuka, T.; Kunieda, T. Rev. Heteroat. Chem. 1996, 15, 227.
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(1991)
Comprehensive Organic Synthesis
, vol.5
, pp. 315
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Oppolzer, W.1
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26
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0030525096
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Reviews in relation to asymmetric Diels-Alder reactions using a chiral auxiliary; (a) Paquette, L. A. Asymmetric Synthesis; Morrison, J. D., Ed.; Academic Press: New York, 1984; Vol. 3, p 455. (b) Helmchen, G.; Karge, R.; Weetman, J. Modern Synthetic Methods; Scheffold, R., Ed.; Springer-Verlag: New York, 1986; Vol. 4, p 262. (c) Oppolzer, W. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon Press, Inc.: New York, 1991; Vol. 5, p 315. (d) Ishizuka, T.; Kunieda, T. Rev. Heteroat. Chem. 1996, 15, 227.
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(1996)
Rev. Heteroat. Chem.
, vol.15
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Ishizuka, T.1
Kunieda, T.2
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Janssen, A.J.M.1
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Curran, D. P.; Yu, H.; Liu, H. Tetrahedron 1994, 50, 7343.
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Tetrahedron
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Curran, D.P.1
Yu, H.2
Liu, H.3
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30
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85034479693
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note
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The conformation of 1A was preexamined through MM and MD calculations using MM2 force field as implemented in MacroModel 4.5 (Department of Chemistry, Columbia University, New York), Molecular dynamics calculation in vacuo at 300 K was carried out with a path length of 100 ps and followed by minimizing random structures sampled after multiple 1 ps intervals. Final full geometry was then optimized by semiempirical PM3 calculation as implemented in SPARTAN 4.0 (Wave function Inc., California).
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32
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85034480316
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2AlCl, the reaction of (+)-2 with cyclohexadiene gave a complex mixture together with recovery of (+)-2
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2AlCl, the reaction of (+)-2 with cyclohexadiene gave a complex mixture together with recovery of (+)-2.
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