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37
-
-
70350195847
-
-
The corresponding protons for la (Figure 1) appear slightly upfield at δ = 3.90 ppm. The corresponding carbons appear at δ = 32.6, 1.10.1, 154.1, and 174.4 ppm
-
The corresponding protons for la (Figure 1) appear slightly upfield at δ = 3.90 ppm. The corresponding carbons appear at δ = 32.6, 1.10.1, 154.1, and 174.4 ppm.
-
-
-
-
38
-
-
70350191006
-
-
See the Supporting Information for details. A benzodifuranone does appear as a characterized intermediate in the synthesis of triacid 7
-
See the Supporting Information for details. A benzodifuranone does appear as a characterized intermediate in the synthesis of triacid 7.
-
-
-
-
39
-
-
70350201979
-
-
3-symmetric molecules in the aba2 space group
-
3-symmetric molecules in the aba2 space group.
-
-
-
-
41
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17044421336
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Paulini, R.; Müller, K.; Diederich, F. Aggew. Chem., Int. Ed. 2005, 44, 1788-1805.
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43
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0001094923
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lida, M.; Araki, T.; Teranishi, K.; Tani, H. Macromolecules 1977, 10, 275-284.
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-
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Lida, M.1
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-
49
-
-
70350191005
-
-
-1)
-
-1).
-
-
-
-
50
-
-
70350189439
-
-
- character on O1) and
-
- character on O1) and
-
-
-
-
51
-
-
70350208287
-
-
deshielding of the C2 protons
-
(b) deshielding of the C2 protons.
-
-
-
-
52
-
-
70350203567
-
-
For example, in terms of ring-opening kinetics with respect to common nucleophiles. Quantitative comparisons of 3 versus 1 are being pursued
-
For example, in terms of ring-opening kinetics with respect to common nucleophiles. Quantitative comparisons of 3 versus 1 are being pursued.
-
-
-
-
53
-
-
70350175583
-
-
The calculated (ZINDO/S) excitation energy with the largest oscillator strength is identical to the maximum absorption (i.e., 215 nm) and arises from multiple degenerate excitations (see the Supporting Information for details)
-
The calculated (ZINDO/S) excitation energy with the largest oscillator strength is identical to the maximum absorption (i.e., 215 nm) and arises from multiple degenerate excitations (see the Supporting Information for details).
-
-
-
-
54
-
-
0039374908
-
-
Heathcote, D. M.; De Boos, G. A.; Atherton, J. H.; Page, M. I. J. Chem. Soc., Perkin Trans. 2 1998, 535-540.
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-
-
Heathcote, D.M.1
De Boos, G.A.2
Atherton, J.H.3
Page, M.I.4
-
56
-
-
70350172395
-
-
This simple acylation. procedure has neither been demonstrated in the literature for derivatives of la nor been performed with 1 (where R = alkyl or aryl) using simple acid chlorides
-
This simple acylation. procedure has neither been demonstrated in the literature for derivatives of la nor been performed with 1 (where R = alkyl or aryl) using simple acid chlorides.
-
-
-
-
57
-
-
70350195846
-
-
See the Supporting Information for the synthesis and characterization of 2a
-
See the Supporting Information for the synthesis and characterization of 2a.
-
-
-
-
58
-
-
70350175582
-
-
ZINDO/S calculations performed on 4b predict degenerate transitions at multiple wavelengths (278, 254, 238, and 207 nm). Data have been included in the Supporting Information
-
ZINDO/S calculations performed on 4b predict degenerate transitions at multiple wavelengths (278, 254, 238, and 207 nm). Data have been included in the Supporting Information.
-
-
-
-
59
-
-
0342927387
-
-
Jayasuriya, N.; Kagan, J.; Owens, J. E.; Kornak, E. P.; Perrine, D. M. J. Org. Chem. 1989, 54, 4203-4205.
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-
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Jayasuriya, N.1
Kagan, J.2
Owens, J.E.3
Kornak, E.P.4
Perrine, D.M.5
-
60
-
-
70350191004
-
-
-1
-
-1.
-
-
-
-
61
-
-
70350188160
-
-
Attempts to refine the X-ray diffraction data obtained from needlelike crystals of 4b have been unsuccessful. A. crystal structure of 2,6,10-trimethyl-substituted 4b has been obtained and shows the anticipated π-stacking (plane-to-plane distance = 3.4 Â) in the context of ID columns. These data will be reported separately
-
Attempts to refine the X-ray diffraction data obtained from needlelike crystals of 4b have been unsuccessful. A. crystal structure of 2,6,10-trimethyl-substituted 4b has been obtained and shows the anticipated π-stacking (plane-to-plane distance = 3.4 Â) in the context of ID columns. These data will be reported separately.
-
-
-
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