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34249898883
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For reviews, see: a
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Nair, V.1
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33747043271
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Burke, S. D, Danheiser, R. L, Eds, John Wiley & Sons: Chichester
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(b) Tse-Loh, H. In Handbook of Reagents for Organic Synthesis, Oxidizing and Reducing Agents; Burke, S. D.; Danheiser, R. L., Eds.; John Wiley & Sons: Chichester, 2005, 77-80.
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(2005)
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Tse-Loh, H.1
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4
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0033523056
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Štefane, B.; Kočevar, M.; Polanc, S. Tetrahedron Lett. 1999, 40, 4429.
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(1999)
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Štefane, B.1
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Polanc, S.3
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5
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34447343623
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For reviews, see: a
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Maulide, N.1
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(b) Nair, V.; Panicker, S. B.; Nair, L. G.; George, T. G.; Augustine, A. Synlett 2003, 156.
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Augustine, A.5
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8
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45749145455
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Itoh, T.; Matsuya, Y.; Nagata, K.; Ohsawa, A. Tetrahedron Lett. 1997, 38, 4177.
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(1997)
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, pp. 4177
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Itoh, T.1
Matsuya, Y.2
Nagata, K.3
Ohsawa, A.4
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10
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45749153307
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(b) Varea, T.; González-Núńez, M. E.; Rodrigo-Chiner, J. Tetrahedron 1989, 30, 4708.
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(1989)
Tetrahedron
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, pp. 4708
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Varea, T.1
González-Núńez, M.E.2
Rodrigo-Chiner, J.3
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11
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0032563916
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(a) Millington, C. R.; Quarrell, R.; Lowe, G. Tetrahedron 1998, 39, 7201.
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(1998)
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Millington, C.R.1
Quarrell, R.2
Lowe, G.3
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0033583545
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(b) Stieber, F.; Grether, U.; Waldmann, H. Angew. Chem. Int. Ed. 1999, 38, 1073.
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, vol.38
, pp. 1073
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Stieber, F.1
Grether, U.2
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0041591464
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(d) Stieber, F.; Grether, U.; Waldmann, H. Chem. Eur. J. 2003, 9, 3270.
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(e) Stieber, F.; Grether, U.; Mazitschek, R.; Soric, N.; Giannis, A.; Waldmann, H. Chem. Eur. J. 2003, 9, 3282.
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, vol.9
, pp. 3282
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Stieber, F.1
Grether, U.2
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Soric, N.4
Giannis, A.5
Waldmann, H.6
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16
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-
45749147737
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-
The products were analysed using MS spectrometry
-
The products were analysed using MS spectrometry.
-
-
-
-
17
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-
0000818802
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-
Baciocchi, E.; Mei, S.; Rol, C. J. Org. Chem. 1978, 43, 2919.
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(1978)
J. Org. Chem
, vol.43
, pp. 2919
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Baciocchi, E.1
Mei, S.2
Rol, C.3
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18
-
-
45749086430
-
-
Typical Procedure: To a solution of CAN (2.193 g, 4 mmol) and 1,2-dibromotetrachloroethane (1.302 g, 4 mmol) in MeOH (5 mL) was added 2,4-dinitrophenylhydrazine (198 mg, 1 mmol) in one portion. The reaction mixture was stirred at r.t. for an additional 5 min, evaporated to dryness below 40°C, treated with H2O (10 mL) and extracted with CH 2Cl2 (5 x 10 mL, The organic phase was dried over anhyd Na2SO4 and concentrated under reduced pressure to give a mixture of products (2a:3Br:3Cl, 50:7.5:1, The mixture was purified by column chromatography (SiO2, EtOAc-light petroleum, 1:10, 2a: orange solid (134 mg, 80, Rf (light petroleum-EtOAc, 3:1) 0.34. 1H NMR (300 MHz, CDCl3, δ, 7.87 (t, J, 8.0 Hz, 1 H, 8.60 (dd, J, 2.0, 8.0 Hz, 2 H, 9.08 (t, J, 2.0 Hz, 1 H, 3Br: yellow oil (24 mg, 10, Rf light petr
-
3): δ = 7.86 (d, J = 9.0 Hz, 1 H), 8.43 (dd, J = 5.5, 9.0 Hz, 1 H), 8.76 (d, J = 2.5 Hz, 1 H).
-
-
-
-
19
-
-
0001173509
-
-
Bernard, M. K.; Makosza, M.; Szafran, B.; Wrzeciono, U. Liebigs Ann. Chem. 1989, 545.
-
(1989)
Liebigs Ann. Chem
, pp. 545
-
-
Bernard, M.K.1
Makosza, M.2
Szafran, B.3
Wrzeciono, U.4
-
20
-
-
0000501496
-
-
Kobe, J.; Stanovnik, B.; Tiler, M. Tetrahedron 1968, 24, 239.
-
(1968)
Tetrahedron
, vol.24
, pp. 239
-
-
Kobe, J.1
Stanovnik, B.2
Tiler, M.3
-
22
-
-
45749152063
-
-
General Procedure for the Oxidation of Hydrazines and Hydrazides: The hydrazine or hydrazide (1 mmol) was added at r.t. within a period of 10-15 min to a solution of CAN (4 mmol) in MeOH (5 mL, The reaction mixture was stirred at r.t. for an additional 10-40 min, evaporated to dryness below 40°C, treated with H2O (10 mL) and neutralised with NaHCO 3 (pH ca. 7, After extraction with CH2Cl2 (5 x 10 mL, the organic phase was dried over anhyd Na2SO4 and concentrated under reduced pressure to give dehydrazinated products 2. If necessary the products were purified by column chromatography on SiO 2. Products 2a-f, 8a and 8b were compared with the authentic samples. 2g: yellow solid; Rf (light petroleum-EtOAc, 5:3) 0.43; mp 69-72°C (MeCN, IR KBr, 3119, 1543, 1517, 1471, 1442, 1371, 1341, 1167, 1066, 1004, 849, 836, 762, 606, 566 cm -1
-
3O: 161.0589; found: 161.0590.
-
-
-
-
23
-
-
33748730944
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-
Košmrlj, J.; Kočevar, M.; Polanc, S. J. Chem. Soc., Perkin Trans. 1 1998, 3917.
-
(1998)
J. Chem. Soc., Perkin Trans. 1
, pp. 3917
-
-
Košmrlj, J.1
Kočevar, M.2
Polanc, S.3
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27
-
-
84987102170
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-
(b) Bergmann, H.; Strumpf, T.; Lyr, H. Pestic Sci. 1988, 23, 141.
-
(1988)
Pestic Sci
, vol.23
, pp. 141
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Bergmann, H.1
Strumpf, T.2
Lyr, H.3
-
28
-
-
0006033487
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-
Forchiassin, M.; Risalti, A.; Russo, C. Tetrahedron 1981, 37, 2921.
-
(1981)
Tetrahedron
, vol.37
, pp. 2921
-
-
Forchiassin, M.1
Risalti, A.2
Russo, C.3
-
29
-
-
45749116083
-
-
Representative Procedure for the Oxidation of Aryl Hydrazinecarboxylates 4a-c: An aryl hydrazine-carboxylate (1 mmol) was added at r.t. in one portion to a solution of CAN (2.1 mmol) in MeOH (5 mL, The reaction mixture was stirred at r.t. for an additional 5 min, evaporated to dryness below 40°C, treated with H2O (10 mL) and extracted with CH2Cl2 (5 x 10 mL, The organic phase was dried over anhyd Na2SO4 and concentrated under reduced pressure to give the pure products 5a-c. 5a: ref. 19. 5b: orange oil (213 mg, 94, Rf (light petroleum-EtOAc, 3:1) 0.59. IR (NaCl, 2985, 1758, 1572, 1503, 1389, 1368, 1296, 1245, 1211, 1165, 1029, 977, 889, 863, 826, 748 cm-1. 1H NMR (300 MHz, CDCl3, δ, 1.48 (t, J, 7.0 Hz, 3 H, 2.48 (s, 3 H, 4.53 (q, J, 7.0 Hz, 2 H, 7.41 (d, J, 8.0 Hz, 1 H, 7.79 (dd, J, 2.0, 8.0 Hz, 1 H, 7.93 d
-
4: 243.0968; found: 243.00968.
-
-
-
-
32
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85004426034
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(b) Higashino, T.; Uchida, M.; Hayashi, E. Chem. Pharm. Bull. 1972, 20, 772.
-
(1972)
Chem. Pharm. Bull
, vol.20
, pp. 772
-
-
Higashino, T.1
Uchida, M.2
Hayashi, E.3
-
33
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0000640701
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-
Kočevar, M.; Mihorko, P.; Polanc, S. J. Org. Chem. 1995, 60, 1466.
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(1995)
J. Org. Chem
, vol.60
, pp. 1466
-
-
Kočevar, M.1
Mihorko, P.2
Polanc, S.3
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