-
1
-
-
33746286405
-
-
(a) Mayer, S.; List, B. Angew. Chem., Int. Ed. 2006, 45, 4193-4195.
-
(2006)
Angew. Chem., Int. Ed.
, vol.45
, pp. 4193-4195
-
-
Mayer, S.1
List, B.2
-
4
-
-
0842279656
-
-
(d) Dorta, R.; Shimon, L.; Milstein, D. J. Organomet. Chem. 2004, 689, 751-758.
-
(2004)
J. Organomet. Chem.
, vol.689
, pp. 751-758
-
-
Dorta, R.1
Shimon, L.2
Milstein, D.3
-
5
-
-
0038159983
-
-
(e) Carter, C.; Fletcher, S.; Nelson, A. Tetrahedron: Asymmetry 2003, 14, 1995-2004.
-
(2003)
Tetrahedron: Asymmetry
, vol.14
, pp. 1995-2004
-
-
Carter, C.1
Fletcher, S.2
Nelson, A.3
-
6
-
-
10944220196
-
-
(a) Yang, J. W.; Hechavarria Fonseca, M. T.; List, B. Angew. Chem., Int. Ed. 2004, 43, 6660-6662.
-
(2004)
Angew. Chem., Int. Ed.
, vol.43
, pp. 6660-6662
-
-
Yang, J.W.1
Hechavarria Fonseca, M.T.2
List, B.3
-
7
-
-
18744366261
-
-
(b) Yang, J. W.; Hechavurria Fonseca, M. T.; Vignola, N.; List, B. Angew. Chem., Int. Ed. 2005, 44, 108-110.
-
(2005)
Angew. Chem., Int. Ed.
, vol.44
, pp. 108-110
-
-
Yang, J.W.1
Hechavurria Fonseca, M.T.2
Vignola, N.3
List, B.4
-
8
-
-
11844277087
-
-
(c) Ouellet, S. G.; Tuttle, J. B.; MacMillan, D. W. C. J. Am. Chem. Soc. 2005, 127, 32-33.
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 32-33
-
-
Ouellet, S.G.1
Tuttle, J.B.2
MacMillan, D.W.C.3
-
9
-
-
0011040448
-
-
For catalytic asymmetric hydrogenations of α/β-unsaturated ketones, see: (a) Massonneau, V.; Le Maux, P.; Simonneaux, G. J. Organomet. Chem. 1987, 327, 269-273.
-
(1987)
J. Organomet. Chem.
, vol.327
, pp. 269-273
-
-
Massonneau, V.1
Le Maux, P.2
Simonneaux, G.3
-
10
-
-
33751155033
-
-
(b) Ohta, T.; Miyake, T.; Seido, N.; Kumobayashi, H.; Takaya, H. J. Org. Chem. 1995, 60, 357-363.
-
(1995)
J. Org. Chem.
, vol.60
, pp. 357-363
-
-
Ohta, T.1
Miyake, T.2
Seido, N.3
Kumobayashi, H.4
Takaya, H.5
-
12
-
-
33750035632
-
-
(BASF AG, Germany) PCT Int. Appl. WO2006040096, 2006
-
(d) Jaekel, C.; Paciello, R. (BASF AG, Germany) PCT Int. Appl. WO2006040096, 2006.
-
-
-
Jaekel, C.1
Paciello, R.2
-
13
-
-
33744939448
-
-
(e) McIntosh, A. I.; Watson, D. J.; Burton, J. W.; Lambert, R. M. J. Am. Chem. Soc. 2006, 128, 7329-7334.
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 7329-7334
-
-
McIntosh, A.I.1
Watson, D.J.2
Burton, J.W.3
Lambert, R.M.4
-
14
-
-
0034686724
-
-
For catalytic asymmetric conjugate reductions of α,β- unsaturated ketones, see: (f) Moritani, Y.; Appella, D. H.; Jurkauskas, V.; Buchwald, S. L. J. Am. Chem. Soc. 2000, 122, 6797-6798.
-
(2000)
J. Am. Chem. Soc.
, vol.122
, pp. 6797-6798
-
-
Moritani, Y.1
Appella, D.H.2
Jurkauskas, V.3
Buchwald, S.L.4
-
15
-
-
2542502428
-
-
(g) Lipshutz, B. H.; Servesko, J. M.; Petersen, T. B.; Papa, P.; Lover, A. A. Org. Lett. 2004, 6, 1273-1275.
-
(2004)
Org. Lett.
, vol.6
, pp. 1273-1275
-
-
Lipshutz, B.H.1
Servesko, J.M.2
Petersen, T.B.3
Papa, P.4
Lover, A.A.5
-
16
-
-
29344452125
-
-
(h) Kanazawa, Y.; Tsuchiya, Y.; Kobayashi, K.; Shiomi, T.; Itoh, J.-I.; Kikuchi, M.; Yamamoto, Y.; Nishiyama, H. Chem.-Eur. J. 2006, 12, 63-71.
-
(2006)
Chem.-Eur. J.
, vol.12
, pp. 63-71
-
-
Kanazawa, Y.1
Tsuchiya, Y.2
Kobayashi, K.3
Shiomi, T.4
Itoh, J.-I.5
Kikuchi, M.6
Yamamoto, Y.7
Nishiyama, H.8
-
17
-
-
0001330639
-
-
For biocatalytic conjugate reductions of enones, see: (i) Kergomard, A.; Renard, M. F.; Veschambre, H.; Courtois, D.; Petiard, V. Phytochemistry 1988, 27, 407-409.
-
(1988)
Phytochemistry
, vol.27
, pp. 407-409
-
-
Kergomard, A.1
Renard, M.F.2
Veschambre, H.3
Courtois, D.4
Petiard, V.5
-
20
-
-
33750048291
-
-
note
-
Using MacMillan catalysts (2S,5S)-(-)-2-tert-butyl-3-methyl-5-benzyl-4- oxoimidazolidinium trifluoroacetate (3j) and (S)-2-(tert-butyl)-3-methyl-4- oxoimidazolidinium trifluoroacetate (3k), respectively, under the reaction conditions described in Table I, (R)-3-methylcyclohexanone was formed with low conversions (<30%) and enantioselectivities (<57:43 er). Higher conversion (40%) and enantioselectivity (75:25 er) was obtained with (2S,5S)-5-benzyl-3- methyl-2-(5-methyl-2-furyl)-4-oxoimidazolidinium trifluoroacetate (31), which has previously been used with enone substrates (see ref 4).
-
-
-
-
21
-
-
33749516633
-
-
After the acceptance of this manuscript a related report in which catalyst 31 (20 mol%) has been successfully used for the transfer hydrogenation of cyclic ketones appeared. See: Tuttle, J. B.; Quellet, S. G.; MacMillan, D. W. C. J. Am. Chem. Soc. 2006, 128, 12662-12663.
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 12662-12663
-
-
Tuttle, J.B.1
Quellet, S.G.2
MacMillan, D.W.C.3
-
22
-
-
23044486704
-
-
For pioneering use of primary amine salts in asymmetric iminium catalysis involving aldehyde substrates, see: (a) Ishihara, K.; Nakano, K. J. Am. Chem. Soc. 2005, 127, 10504-10505.
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 10504-10505
-
-
Ishihara, K.1
Nakano, K.2
-
23
-
-
33745725832
-
-
(b) Sakakura, A.; Suzuki, K.; Nakano, K.; Ishihara, K. Org. Lett. 2006, 8, 2229-2232.
-
(2006)
Org. Lett.
, vol.8
, pp. 2229-2232
-
-
Sakakura, A.1
Suzuki, K.2
Nakano, K.3
Ishihara, K.4
-
24
-
-
8944249371
-
-
For the use of preformed imines of α,β-unsaturated aldehydes and amino acid esters in diastereoselective Michael additions, see: (c) Hashimoto, S.; Komeshima, N.; Yamada, S.; Koga, K. Tetrahedron Lett. 1977, 33, 2907-2908.
-
(1977)
Tetrahedron Lett.
, vol.33
, pp. 2907-2908
-
-
Hashimoto, S.1
Komeshima, N.2
Yamada, S.3
Koga, K.4
-
25
-
-
33745683617
-
-
For pioneering studies on chiral phosphoric acid catalysts, see: (a) Akiyama, T.; Itoh, J.; Fuehibe, K. Adv. Synth. Catal. 2006, 348, 999-1010.
-
(2006)
Adv. Synth. Catal.
, vol.348
, pp. 999-1010
-
-
Akiyama, T.1
Itoh, J.2
Fuehibe, K.3
-
27
-
-
27844464898
-
-
Also see: (c) Rowland, G. B.; Zhang, H.; Rowland, E. B.; Chennamadhavuni, S.; Wang, Y.; Antilla, J. C. J. Am. Chem. Soc. 2005, 127, 15696-15697.
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 15696-15697
-
-
Rowland, G.B.1
Zhang, H.2
Rowland, E.B.3
Chennamadhavuni, S.4
Wang, Y.5
Antilla, J.C.6
-
28
-
-
24044465512
-
-
(d) Rueping, M.; Sugiono, E.; Azap, C.; Theissmann, T.; Bolte, M. Org. Lett. 2005, 7, 3781-3783.
-
(2005)
Org. Lett.
, vol.7
, pp. 3781-3783
-
-
Rueping, M.1
Sugiono, E.2
Azap, C.3
Theissmann, T.4
Bolte, M.5
-
29
-
-
28044438742
-
-
(e) Hoffmann, S.; Seayad, A. M.; List, B. Angew. Chem., Int. Ed. 2005, 44, 7424-7427.
-
(2005)
Angew. Chem., Int. Ed.
, vol.44
, pp. 7424-7427
-
-
Hoffmann, S.1
Seayad, A.M.2
List, B.3
-
30
-
-
30744477746
-
-
(f) Storer, R. I.; Currera, D. E.; Ni, Y.; MacMillan, D. W. C. J. Am. Chem. Soc. 2006, 128, 84-86.
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 84-86
-
-
Storer, R.I.1
Currera, D.E.2
Ni, Y.3
MacMillan, D.W.C.4
-
31
-
-
31944452587
-
-
(g) Seayad, J.; Seayad, A. M.; List, B. J. Am. Chem. Soc. 2006, 128, 1086-1087.
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 1086-1087
-
-
Seayad, J.1
Seayad, A.M.2
List, B.3
-
32
-
-
30544453001
-
-
(h) Akiyama, T.; Tamura, Y.; Itoh, J.; Monta, H.; Fuehibe, K. Synlett 2006, 141-143.
-
(2006)
Synlett
, pp. 141-143
-
-
Akiyama, T.1
Tamura, Y.2
Itoh, J.3
Monta, H.4
Fuehibe, K.5
-
33
-
-
33750087104
-
-
note
-
TRIP: 3,3′-bis(2,4,6-triisopropylphenyl)-1,1′-binaphthyl-2, 2′-diyl hydrogen phosphate.
-
-
-
|