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For comprehensive books and selected reviews, see: a
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For comprehensive books and selected reviews, see: (a) Dalko, P. I.; Moisan, L. Angew. Chem. Int. Ed. 2004, 43, 5138.
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Angew. Chem. Int. Ed
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(i) Gaunt, M. J.; Johansonn, C. C. C.; McNally, A.; Vo, N. T. Drug Discovery Today 2007, 12, 8.
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Drug Discovery Today
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Gaunt, M.J.1
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Vo, N.T.4
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11
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55049138759
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Dalko, P. I, Ed, Wiley-VCH: Weinheim
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(k) Enantioselective Organocatalysis; Dalko, P. I., Ed.; Wiley-VCH: Weinheim, 2007.
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Enantioselective Organocatalysis
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(l) List, B. Chem. Rev. 2007, 107, 5413.
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Chem. Rev
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(m) Enders, D.; Grondai, C.; Hüttl, M. R. M. Angew. Chem. Int. Ed. 2007, 46, 1570.
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Angew. Chem. Int. Ed
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Enders, D.1
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(n) Guillena, G.; Ramón, D. J.; Yus, M. Tetrahedron: Asymmetry 2007, 18, 693.
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(2007)
Tetrahedron: Asymmetry
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Guillena, G.1
Ramón, D.J.2
Yus, M.3
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(p) Kotsuki, H.; Ikishima, H.; Okuyama, A. Heterocycles 2008, 75, 493.
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Heterocycles
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Kotsuki, H.1
Ikishima, H.2
Okuyama, A.3
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(q) Kotsuki, H.; Ikishima, H.; Okuyama, A. Heterocycles 2008, 75, 151.
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(2008)
Heterocycles
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Kotsuki, H.1
Ikishima, H.2
Okuyama, A.3
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Guillena, G.; Nájera, C.; Ramón, D. J. Tetrahedron: Asymmetry 2007, 18, 2249.
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Tetrahedron: Asymmetry
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Guillena, G.1
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Ramón, D.J.3
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(a) Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2006, 17, 729.
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Tetrahedron: Asymmetry
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Guillena, G.1
Hita, M.C.2
Nájera, C.3
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(c) Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2006, 17, 1493.
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(2006)
Tetrahedron: Asymmetry
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Hita, M.C.2
Nájera, C.3
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Corrigendum: Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2007, 18, 1031.
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(d) Corrigendum: Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2007, 18, 1031.
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23
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(e) Guizzetti, S.; Benaglia, M.; Pignataro, L.; Puglisi, A. Tetrahedron: Asymmetry 2006, 17, 2754.
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Tetrahedron: Asymmetry
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Guizzetti, S.1
Benaglia, M.2
Pignataro, L.3
Puglisi, A.4
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(g) Guizzetti, S.; Benaglia, M.; Raimondi, L.; Celentano, G. Org. Lett. 2001, 9, 1247.
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Org. Lett
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Guizzetti, S.1
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(a) Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2006, 17, 1027.
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Tetrahedron: Asymmetry
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Guillena, G.1
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Nájera, C.3
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Corrigendum: Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2007, 18, 1030.
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(b) Corrigendum: Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2007, 18, 1030.
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(c) Guillena, G.; Hita, M. C.; Nájera, C. Arkivoc 2007, (iv), 260.
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Arkivoc
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Corrigendum: Guillena, G.; Hita, M. C.; Nájera, C. Arkivoc 2007, (i), 146.
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(d) Corrigendum: Guillena, G.; Hita, M. C.; Nájera, C. Arkivoc 2007, (i), 146.
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(e) Guillena, G.; Hita, M. C.; Nájera, C. Tetrahedron: Asymmetry 2007, 18, 1272.
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(a) Guillena, G.; Hita, M. C.; Nájera, C.; Viózquez, S. F. Tetrahedron: Asymmetry 2007, 18, 2300.
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Tetrahedron: Asymmetry
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(b) Guillena, G.; Hita, M. C.; Nájera, C.; Viózquez, S. F. J. Org. Chem. 2008, 73, 5933.
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J. Org. Chem
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Chen, T.; Gao, J.; Shi, M. Tetrahedron 2006, 62, 6289.
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Tetrahedron
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Chen, T.1
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Shi, M.3
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34
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33750460594
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For some other organacatalyzed enantioselective aldol reactions under solvent-free conditions, see: a
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For some other organacatalyzed enantioselective aldol reactions under solvent-free conditions, see: (a) Rodríguez, B.; Rantanen, T.; Bolm, C. Angew. Chem. Int. Ed. 2006, 45, 6924.
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Angew. Chem. Int. Ed
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Rodríguez, B.1
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Bolm, C.3
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(b) Hayashi, Y.; Aratake, S.; Itoh, T.; Okano, T.; Sumiya, T.; Shoji, M. Chem. Commun. 2007, 957.
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Chem. Commun
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Hayashi, Y.1
Aratake, S.2
Itoh, T.3
Okano, T.4
Sumiya, T.5
Shoji, M.6
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34250371777
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(c) Rodríguez, B.; Bruckmann, A.; Bolm, C. Chem. Eur. J. 2007, 13, 4710.
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Chem. Eur. J
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Rodríguez, B.1
Bruckmann, A.2
Bolm, C.3
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33750007325
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Chen, J.-R.; Li, X.-Y.; Xing, X.-N.; Xiao, W.-J. J. Org. Chem. 2006, 71, 8198.
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J. Org. Chem
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, pp. 8198
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Chen, J.-R.1
Li, X.-Y.2
Xing, X.-N.3
Xiao, W.-J.4
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39
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57649115151
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Eder, U.; Wiechert, R.; Sauer, G. Ger. Patent, DE 2014757, 1971; Chem. Abstr. 1972, 76, 14180.
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(a) Eder, U.; Wiechert, R.; Sauer, G. Ger. Patent, DE 2014757, 1971; Chem. Abstr. 1972, 76, 14180.
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Patent, DE 2102623, 59072
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(b) Hajos, Z. G.; Parrish, D. R. Ger. Patent, DE 2102623, 1971; Chem. Abstr. 1972, 76, 59072.
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(c) Eder, U.; Sauer, G.; Wiechert, R. Angew. Chem. Int. Ed. Engl. 1971, 10, 496.
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Angew. Chem. Int. Ed. Engl
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(e) Hajos, Z. G.; Parrish, D. R. In Org. Synth., Coll. Vol. VII; Freeman, J. P., Ed.; Wiley: New York, 1990, 363.
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(f) Buchschacher, P.; Fürst, A.; Gutzwiller, J. In Org. Synth., Coll. Vol. VII; Freeman, J. P., Ed.; Wiley: New York, 1990, 368.
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(g) Kwiatkowski, S.; Syed, A.; Brock, C. P.; Watt, D. S. Synthesis 1989, 818.
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Synthesis
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48
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57649126963
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Representative Experimental Procedure: Anhydrous Solvent-Free Conditions: To a mixture of the corresponding aldehyde (0.25 mmol, catalyst 2 (0.0125 mmol, 6.5 mg) and benzoic acid (0.0025 mmol, 0.3 mg) at 0°C was added the corresponding ketone (0.5 mmol, The reaction was stirred until the aldehyde was consumed (monitored by TLC, Then, the crude product was diluted in CH2Cl2 (10 mL, silica gel was added and the solvent was evaporated in vacuo. The resulting residue was purified by flash chromatography (hexanes-EtOAc) to yield the pure aldol product. Wet Solvent-Free Conditions: To a mixture of the corresponding aldehyde (0.25 mmol, catalyst 2 (0.0125 mmol, 6.5 mg, benzoic acid (0.0025 mmol, 0.3 mg, H2O (33 μL) was added at 0°C followed by the corresponding ketone (0.5 mmol, The reaction was stirred until the aldehyde was consumed. The crude product was diluted in CH2Cl2 10 mL, MgSO
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4 was added and filtered. To the filtrate, silica gel was added and the above purification procedure was followed to obtain the aldol product.
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