-
2
-
-
33646468489
-
-
Taylor, M. S.; Jacobsen, E. N. Angew. Chem., Int. Ed. 2006, 45, 1520-1543
-
(2006)
Angew. Chem., Int. Ed.
, vol.45
, pp. 1520-1543
-
-
Taylor, M.S.1
Jacobsen, E.N.2
-
5
-
-
0001382360
-
-
Hine, J.; Linden, S.-M.; Kanagasabapathy, V. M. J. Org. Chem. 1985, 50, 5096-5099
-
(1985)
J. Org. Chem.
, vol.50
, pp. 5096-5099
-
-
Hine, J.1
Linden, S.-M.2
Kanagasabapathy, V.M.3
-
6
-
-
0034625104
-
-
Rink, R.; Kingma, J.; Spelberg, J. H. L.; Janssen, D. B. Biochemistry 2000, 39, 5600-5613
-
(2000)
Biochemistry
, vol.39
, pp. 5600-5613
-
-
Rink, R.1
Kingma, J.2
Spelberg, J.H.L.3
Janssen, D.B.4
-
7
-
-
0034725581
-
-
Yamada, T.; Morisseau, C.; Maxwell, J. E.; Argiriadi, M. A.; Christianson, D. W.; Hammock, B. D. J. Biol. Chem. 2000, 275, 23082-23088
-
(2000)
J. Biol. Chem.
, vol.275
, pp. 23082-23088
-
-
Yamada, T.1
Morisseau, C.2
Maxwell, J.E.3
Argiriadi, M.A.4
Christianson, D.W.5
Hammock, B.D.6
-
8
-
-
26444612098
-
-
Potuzak, J. S.; Moilanen, S. B.; Tan, D. S. J. Am. Chem. Soc. 2005, 127, 13796-13797
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 13796-13797
-
-
Potuzak, J.S.1
Moilanen, S.B.2
Tan, D.S.3
-
9
-
-
68949184356
-
-
Liu, G.; Wurst, J. M.; Tan, D. S. Org. Lett. 2009, 11, 3670-3673
-
(2009)
Org. Lett.
, vol.11
, pp. 3670-3673
-
-
Liu, G.1
Wurst, J.M.2
Tan, D.S.3
-
10
-
-
33244490087
-
-
Moilanen, S. B.; Potuzak, J. S.; Tan, D. S. J. Am. Chem. Soc. 2006, 128, 1792-1793
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 1792-1793
-
-
Moilanen, S.B.1
Potuzak, J.S.2
Tan, D.S.3
-
11
-
-
30744465911
-
-
Aho, J. E.; Pihko, P. M.; Rissa, T. K. Chem. Rev. 2005, 105, 4406-4440
-
(2005)
Chem. Rev.
, vol.105
, pp. 4406-4440
-
-
Aho, J.E.1
Pihko, P.M.2
Rissa, T.K.3
-
16
-
-
79951521008
-
-
Morten, C. J.; Byers, J. A.; Jamison, T. F. J. Am. Chem. Soc. 2011, 133, 1902-1908
-
(2011)
J. Am. Chem. Soc.
, vol.133
, pp. 1902-1908
-
-
Morten, C.J.1
Byers, J.A.2
Jamison, T.F.3
-
17
-
-
34848815912
-
-
Lotesta, S.; Kiren, S.; Sauers, R.; Williams, L. Angew. Chem., Int. Ed. 2007, 46, 7108-7111
-
(2007)
Angew. Chem., Int. Ed.
, vol.46
, pp. 7108-7111
-
-
Lotesta, S.1
Kiren, S.2
Sauers, R.3
Williams, L.4
-
18
-
-
33847801270
-
-
Lemieux, R. U.; Hendriks, K. B.; Stick, R. V.; James, K. J. Am. Chem. Soc. 1975, 97, 4056-4062
-
(1975)
J. Am. Chem. Soc.
, vol.97
, pp. 4056-4062
-
-
Lemieux, R.U.1
Hendriks, K.B.2
Stick, R.V.3
James, K.4
-
20
-
-
0032583441
-
-
Nukada, T.; Berces, A.; Zgierski, M. Z.; Whitfield, D. M. J. Am. Chem. Soc. 1998, 120, 13291-13295
-
(1998)
J. Am. Chem. Soc.
, vol.120
, pp. 13291-13295
-
-
Nukada, T.1
Berces, A.2
Zgierski, M.Z.3
Whitfield, D.M.4
-
21
-
-
0342936076
-
-
Jung, K-H.; Müller, M.; Schmidt, R. R. Chem. Rev. 2000, 100, 4423-4442-4442
-
(2000)
Chem. Rev.
, vol.100
, pp. 4423-4442
-
-
Jung, K.-H.1
Müller, M.2
Schmidt, R.R.3
-
23
-
-
0034826966
-
-
Bérces, A.; Enright, G.; Nukada, T.; Whitfield, D. M. J. Am. Chem. Soc. 2001, 123, 5460-5464
-
(2001)
J. Am. Chem. Soc.
, vol.123
, pp. 5460-5464
-
-
Bérces, A.1
Enright, G.2
Nukada, T.3
Whitfield, D.M.4
-
25
-
-
7244245511
-
-
Crich, D.; Chandrasekera, N. S. Angew. Chem., Int. Ed. 2004, 43, 5386-5389
-
(2004)
Angew. Chem., Int. Ed.
, vol.43
, pp. 5386-5389
-
-
Crich, D.1
Chandrasekera, N.S.2
-
26
-
-
24144498474
-
-
Kim, J.-H.; Yang, H.; Park, J.; Boons, G.-J. J. Am. Chem. Soc. 2005, 127, 12090-12097
-
(2005)
J. Am. Chem. Soc.
, vol.127
, pp. 12090-12097
-
-
Kim, J.-H.1
Yang, H.2
Park, J.3
Boons, G.-J.4
-
27
-
-
34250812517
-
-
El-Badri, M. H.; Willenbring, D.; Tantillo, D. J.; Gervay-Hague, J. J. Org. Chem. 2007, 72, 4663-4672
-
(2007)
J. Org. Chem.
, vol.72
, pp. 4663-4672
-
-
El-Badri, M.H.1
Willenbring, D.2
Tantillo, D.J.3
Gervay-Hague, J.4
-
28
-
-
61849111654
-
-
Zhu, X.; Schmidt, R. Angew. Chem., Int. Ed. 2009, 48, 1900-1934
-
(2009)
Angew. Chem., Int. Ed.
, vol.48
, pp. 1900-1934
-
-
Zhu, X.1
Schmidt, R.2
-
33
-
-
0033996047
-
-
Namchuk, M. N.; McCarter, J. D.; Becalski, A.; Andrews, T.; Withers, S. G. J. Am. Chem. Soc. 2000, 122, 1270-1277
-
(2000)
J. Am. Chem. Soc.
, vol.122
, pp. 1270-1277
-
-
Namchuk, M.N.1
McCarter, J.D.2
Becalski, A.3
Andrews, T.4
Withers, S.G.5
-
36
-
-
33947456072
-
-
Winstein, S.; Grunwald, E.; Jones, H. W. J. Am. Chem. Soc. 1950, 73, 2700-2707
-
(1950)
J. Am. Chem. Soc.
, vol.73
, pp. 2700-2707
-
-
Winstein, S.1
Grunwald, E.2
Jones, H.W.3
-
39
-
-
0001774709
-
-
Arnett, E. M.; Petro, C.; Schleyer, P. v. R. J. Am. Chem. Soc. 1979, 101, 522-526
-
(1979)
J. Am. Chem. Soc.
, vol.101
, pp. 522-526
-
-
Arnett, E.M.1
Petro, C.2
Schleyer V. P, R.3
-
40
-
-
0036851522
-
-
Koo, I. S.; An, S. K.; Yang, K.; Lee, I.; Bentley, T. W. J. Phys. Org. Chem. 2002, 15, 758-764
-
(2002)
J. Phys. Org. Chem.
, vol.15
, pp. 758-764
-
-
Koo, I.S.1
An, S.K.2
Yang, K.3
Lee, I.4
Bentley, T.W.5
-
50
-
-
0031000754
-
-
Lim, C.; Kim, S-H.; Yoh, S-D.; Fujio, M.; Tsuno, Y. Tetrahedron Lett. 1997, 38, 3243-3246
-
(1997)
Tetrahedron Lett.
, vol.38
, pp. 3243-3246
-
-
Lim, C.1
Kim, S.-H.2
Yoh, S.-D.3
Fujio, M.4
Tsuno, Y.5
-
51
-
-
0037751127
-
-
Yoh, S. D.; Cheong, D. Y.; Lee, C. H.; Kim, S. H.; Park, J. H.; Fujio, M.; Tsuno, Y. J. Phys. Org. Chem. 2001, 14, 123-130
-
(2001)
J. Phys. Org. Chem.
, vol.14
, pp. 123-130
-
-
Yoh, S.D.1
Cheong, D.Y.2
Lee, C.H.3
Kim, S.H.4
Park, J.H.5
Fujio, M.6
Tsuno, Y.7
-
55
-
-
0030799390
-
-
Liras, J. L.; Lynch, V. M.; Anslyn, E. V. J. Am. Chem. Soc. 1997, 119, 8191-8200
-
(1997)
J. Am. Chem. Soc.
, vol.119
, pp. 8191-8200
-
-
Liras, J.L.1
Lynch, V.M.2
Anslyn, E.V.3
-
57
-
-
58149154432
-
-
Krumper, J. R.; Salamant, W. A.; Woerpel, K. A. Org. Lett. 2008, 10, 4907-4910
-
(2008)
Org. Lett.
, vol.10
, pp. 4907-4910
-
-
Krumper, J.R.1
Salamant, W.A.2
Woerpel, K.A.3
-
58
-
-
70350714361
-
-
Krumper, J. R.; Salamant, W. A.; Woerpel, K. A. J. Org. Chem. 2009, 74, 8039-8050
-
(2009)
J. Org. Chem.
, vol.74
, pp. 8039-8050
-
-
Krumper, J.R.1
Salamant, W.A.2
Woerpel, K.A.3
-
67
-
-
68849122846
-
-
Phan, T. B.; Nolte, C.; Kobayashi, S.; Ofial, A. R.; Mayr, H. J. Am. Chem. Soc. 2009, 131, 11392-11401
-
(2009)
J. Am. Chem. Soc.
, vol.131
, pp. 11392-11401
-
-
Phan, T.B.1
Nolte, C.2
Kobayashi, S.3
Ofial, A.R.4
Mayr, H.5
-
68
-
-
37049094547
-
-
Jorge, J. A. L.; Kiyan, N. Z.; Miyata, Y.; Miller, J. J. Chem. Soc., Perkin Trans. 2 1981, 100-103
-
(1981)
J. Chem. Soc., Perkin Trans. 2
, pp. 100-103
-
-
Jorge, J.A.L.1
Kiyan, N.Z.2
Miyata, Y.3
Miller, J.4
-
69
-
-
0348062942
-
-
Vitullo, V. P.; Grabowski, J.; Sridharan, S. J. Chem. Soc., Chem. Commun. 1981, 737-738
-
(1981)
J. Chem. Soc., Chem. Commun.
, pp. 737-738
-
-
Vitullo, V.P.1
Grabowski, J.2
Sridharan, S.3
-
70
-
-
79957751987
-
-
2/acetone solution of the glycal epoxide, which likely resulted in transient warming of the reaction mixture to a temperature at which the spirocyclization occurred. The reaction may also have proceeded during warming from -63 °C to rt prior to workup. Along these lines, low-temperature NMR analysis of the reaction during that warming process (-63 °C → rt over 15 min) herein indicated formation of a 80:0:20 ratio of 18: 19: 20
-
2/acetone solution of the glycal epoxide, which likely resulted in transient warming of the reaction mixture to a temperature at which the spirocyclization occurred. The reaction may also have proceeded during warming from -63 °C to rt prior to workup. Along these lines, low-temperature NMR analysis of the reaction during that warming process (-63 °C → rt over 15 min) herein indicated formation of a 80:0:20 ratio of 18: 19: 20.
-
-
-
-
71
-
-
4243664295
-
-
Hansch, C.; Leo, A.; Taft, R. W. Chem. Rev. 1991, 91, 165-195
-
(1991)
Chem. Rev.
, vol.91
, pp. 165-195
-
-
Hansch, C.1
Leo, A.2
Taft, R.W.3
-
74
-
-
0000609662
-
-
Absolute ρ values between 0 and 1 are usually seen as radical reactions, further narrowing our range of expected Hammett correlation values to approximately -1 to -5. (e.g.,;;;).
-
Absolute ρ values between 0 and 1 are usually seen as radical reactions, further narrowing our range of expected Hammett correlation values to approximately -1 to -5. (e.g., Pryor, W. A.; Lin, T. H.; Stanley, J. P.; Henderson, R. W. J. Am. Chem. Soc. 1973, 95, 6993-6998).
-
(1973)
J. Am. Chem. Soc.
, vol.95
, pp. 6993-6998
-
-
Pryor, W.A.1
Lin, T.H.2
Stanley, J.P.3
Henderson, R.W.4
-
76
-
-
48349084446
-
-
Galabov, B.; Nikolova, V.; Wilke, J. J.; Schaefer, H. F.; Allen, W. D. J. Am. Chem. Soc. 2008, 130, 9887-9896
-
(2008)
J. Am. Chem. Soc.
, vol.130
, pp. 9887-9896
-
-
Galabov, B.1
Nikolova, V.2
Wilke, J.J.3
Schaefer, H.F.4
Allen, W.D.5
-
77
-
-
79957709526
-
-
See Supporting Information for full details
-
See Supporting Information for full details.
-
-
-
-
78
-
-
0034829750
-
-
Lau, E. Y.; Newby, Z. E.; Bruice, T. C. J. Am. Chem. Soc. 2001, 123, 3350-3357
-
(2001)
J. Am. Chem. Soc.
, vol.123
, pp. 3350-3357
-
-
Lau, E.Y.1
Newby, Z.E.2
Bruice, T.C.3
-
79
-
-
79957785281
-
-
Attempts to distinguish between these possible transition states using computational methods have been unsuccessful thus far.
-
Attempts to distinguish between these possible transition states using computational methods have been unsuccessful thus far.
-
-
-
-
81
-
-
30144437908
-
-
DMDO is prepared from acetone and was delivered herein as a 0.073 M solution in acetone
-
DMDO is prepared from acetone and was delivered herein as a 0.073 M solution in acetone: Murray, R. W.; Jeyaraman, R. J. Org. Chem. 1985, 50, 2847-2853
-
(1985)
J. Org. Chem.
, vol.50
, pp. 2847-2853
-
-
Murray, R.W.1
Jeyaraman, R.2
-
82
-
-
0030908605
-
-
Previous efforts in our laboratory to generate acetone-free DMDO using a published protocol have been unsuccessful
-
Previous efforts in our laboratory to generate acetone-free DMDO using a published protocol have been unsuccessful: Gilbert, M.; Ferrer, M.; Sanchez-Baeza, F.; Messeguer, A. Tetrahedron 1997, 53, 8643-8650
-
(1997)
Tetrahedron
, vol.53
, pp. 8643-8650
-
-
Gilbert, M.1
Ferrer, M.2
Sanchez-Baeza, F.3
Messeguer, A.4
-
83
-
-
79957689608
-
-
In addition, the epoxidation reaction itself produces one equivalent of acetone as a byproduct.
-
In addition, the epoxidation reaction itself produces one equivalent of acetone as a byproduct.
-
-
-
-
85
-
-
79957769448
-
-
6 to achieve higher acetone concentrations in these experiments.
-
6 to achieve higher acetone concentrations in these experiments.
-
-
-
-
86
-
-
0034702698
-
-
For lead references on MeOH-acetone liquid mixtures, see
-
For lead references on MeOH-acetone liquid mixtures, see: Venables, D. S.; Schmuttenmaer, C. A. J. Chem. Phys. 2000, 113, 3249-3260
-
(2000)
J. Chem. Phys.
, vol.113
, pp. 3249-3260
-
-
Venables, D.S.1
Schmuttenmaer, C.A.2
-
88
-
-
79957690206
-
-
Methyl glycosides 16a-e (cf. Table 2) were similarly observed exclusively with retention of configuration at the anomeric carbon. Interestingly, this stereoselectivity in the aryl substrate series is not seen in the aliphatic substrate series, where both glycoside anomers are observed (ref 5). This may result from the increased steric bulk of the C1-aryl substituent in 30, further disfavoring an axial orientation.
-
Methyl glycosides 16a-e (cf. Table 2) were similarly observed exclusively with retention of configuration at the anomeric carbon. Interestingly, this stereoselectivity in the aryl substrate series is not seen in the aliphatic substrate series, where both glycoside anomers are observed (ref 5). This may result from the increased steric bulk of the C1-aryl substituent in 30, further disfavoring an axial orientation.
-
-
-
-
89
-
-
2942741228
-
-
N1 mechanisms, see
-
N1 mechanisms, see: Ahmad, I. A.; Birkby, S. L.; Bullen, C. A.; Groves, P. D.; Lankau, T.; Lee, W. H.; Maskill, H.; Miatt, P. C.; Meneer, I. D.; Shaw, K. J. Phys. Org. Chem. 2004, 17, 560-566
-
(2004)
J. Phys. Org. Chem.
, vol.17
, pp. 560-566
-
-
Ahmad, I.A.1
Birkby, S.L.2
Bullen, C.A.3
Groves, P.D.4
Lankau, T.5
Lee, W.H.6
Maskill, H.7
Miatt, P.C.8
Meneer, I.D.9
Shaw, K.10
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