-
1
-
-
0000718373
-
-
a) L. Pu, Chem. Rev. 1998, 98, 2405-2494;
-
(1998)
Chem. Rev.
, vol.98
, pp. 2405-2494
-
-
Pu, L.1
-
3
-
-
17044396896
-
-
Angew. Chem. Int. Ed. 1999, 38, 1350-1377;
-
(1999)
Angew. Chem. Int. Ed.
, vol.38
, pp. 1350-1377
-
-
-
4
-
-
0347359146
-
-
c) P. F. H. Schwab, M. D. Levin, J. Michl, Chem. Rev. 1999, 99, 1863-1933;
-
(1999)
Chem. Rev.
, vol.99
, pp. 1863-1933
-
-
Schwab, P.F.H.1
Levin, M.D.2
Michl, J.3
-
5
-
-
0000446349
-
-
d) A. J. Berresheim, M. Müller, K. Müllen, Chem. Rev. 1999, 99, 1747-1785.
-
(1999)
Chem. Rev.
, vol.99
, pp. 1747-1785
-
-
Berresheim, A.J.1
Müller, M.2
Müllen, K.3
-
6
-
-
0035781183
-
-
For a review on the function of synthetic helical polymers see: T. Nakano, Y. Okamoto, Chem. Rev. 2001, 101, 4013-4038.
-
(2001)
Chem. Rev.
, vol.101
, pp. 4013-4038
-
-
Nakano, T.1
Okamoto, Y.2
-
8
-
-
31344442253
-
-
For recent reviews on this phenomenon and on its application to stereochemical problems: a) G. Gottarelli, G. P. Spada, Top. Stereochem. 2003, 24, 425-455;
-
(2003)
Top. Stereochem.
, vol.24
, pp. 425-455
-
-
Gottarelli, G.1
Spada, G.P.2
-
10
-
-
0001419235
-
-
For recent papers on the application of chiral doping of nematics: a) R. A. van Delden, B. L. Feringa, Angew. Chem. 2001, 113, 3298-3300;
-
(2001)
Angew. Chem.
, vol.113
, pp. 3298-3300
-
-
Van Delden, R.A.1
Feringa, B.L.2
-
11
-
-
0035801625
-
-
Angew. Chem. Int. Ed. 2001, 40, 3198-3200;
-
(2001)
Angew. Chem. Int. Ed.
, vol.40
, pp. 3198-3200
-
-
-
13
-
-
9244252482
-
-
c) S. Pieraccini, G. Gottarelli, R. Labruto, S. Masiero, O. Pandoli, G. P. Spada, Chem. Eur. J. 2004, 10, 5632-5639;
-
(2004)
Chem. Eur. J.
, vol.10
, pp. 5632-5639
-
-
Pieraccini, S.1
Gottarelli, G.2
Labruto, R.3
Masiero, S.4
Pandoli, O.5
Spada, G.P.6
-
14
-
-
0347719289
-
-
d) R. A. van Delden, T. Mecca, C. Rosini, B. L. Feringa, Chem. Eur. J. 2004, 10, 61.
-
(2004)
Chem. Eur. J.
, vol.10
, pp. 61
-
-
Van Delden, R.A.1
Mecca, T.2
Rosini, C.3
Feringa, B.L.4
-
15
-
-
84987584115
-
-
G. Gottarelli, H.-J. Hansen, G. P. Spada, R. H. Weber, Helv. Chim. Acta 1987, 70, 430-435.
-
(1987)
Helv. Chim. Acta
, vol.70
, pp. 430-435
-
-
Gottarelli, G.1
Hansen, H.-J.2
Spada, G.P.3
Weber, R.H.4
-
16
-
-
0034812111
-
-
A. di Matteo, S. M. Todd, G. Gottarelli, G. Solladié, V. E. Williams, R. P. Lemieux, A. Ferrarini, G.P. Spada, J. Am. Chem. Soc. 2001, 123, 7842-7851.
-
(2001)
J. Am. Chem. Soc.
, vol.123
, pp. 7842-7851
-
-
Di Matteo, A.1
Todd, S.M.2
Gottarelli, G.3
Solladié, G.4
Williams, V.E.5
Lemieux, R.P.6
Ferrarini, A.7
Spada, G.P.8
-
17
-
-
0000362357
-
-
a) A. Ferrarini, G. J. Moro, P. L. Nordio, Mol. Phys. 1996, 87, 485;
-
(1996)
Mol. Phys.
, vol.87
, pp. 485
-
-
Ferrarini, A.1
Moro, G.J.2
Nordio, P.L.3
-
18
-
-
0000366242
-
-
b) A. Ferrarini, F. Janssen, G. J. Moro, P. L. Nordio, Liq. Cryst. 1999, 26, 201.
-
(1999)
Liq. Cryst.
, vol.26
, pp. 201
-
-
Ferrarini, A.1
Janssen, F.2
Moro, G.J.3
Nordio, P.L.4
-
19
-
-
0346034637
-
-
S. Pieraccini, M. I. Donnoli, A. Ferrarini, G. Gottarelli, G. Licini, C. Rosini, S. Superchi, G. P. Spada, J. Org. Chem. 2003, 68, 519-526.
-
(2003)
J. Org. Chem.
, vol.68
, pp. 519-526
-
-
Pieraccini, S.1
Donnoli, M.I.2
Ferrarini, A.3
Gottarelli, G.4
Licini, G.5
Rosini, C.6
Superchi, S.7
Spada, G.P.8
-
20
-
-
0000898249
-
-
A. Ferrarini, G. Gottarelli, P. L. Nordio, G.P. Spada, J. Chem. Soc. Perkin Trans. 2 1999, 411-417.
-
(1999)
J. Chem. Soc. Perkin Trans. 2
, pp. 411-417
-
-
Ferrarini, A.1
Gottarelli, G.2
Nordio, P.L.3
Spada, G.P.4
-
21
-
-
0004625336
-
-
In contrast to helicenes, with a form which is reminiscent of the shape of the steps of a spiral staircase, these molecules resemble the banisters (German: "Geländer") of such a staircase: B. Kiupel, C. Niederalt, M. Nieger, S. Grimme, F. Vögtle, Angew. Chem. 1998, 110, 3206-3209;
-
(1998)
Angew. Chem.
, vol.110
, pp. 3206-3209
-
-
Kiupel, B.1
Niederalt, C.2
Nieger, M.3
Grimme, S.4
Vögtle, F.5
-
22
-
-
0032538784
-
-
Angew. Chem. Int. Ed. 1998, 37, 3031-3034.
-
(1998)
Angew. Chem. Int. Ed.
, vol.37
, pp. 3031-3034
-
-
-
24
-
-
0033536476
-
-
L. Di Bari, G. Pescitelli, P. Salvadori, J. Am. Chem. Soc. 1999, 121, 7998.
-
(1999)
J. Am. Chem. Soc.
, vol.121
, pp. 7998
-
-
Di Bari, L.1
Pescitelli, G.2
Salvadori, P.3
-
25
-
-
0030220469
-
-
a) K. Tanaka, T. Furuta, K. Fuji, Y. Miwa, T. Taga, Tetrahedron: Asymmetry 1996, 7, 2199-2202;
-
(1996)
Tetrahedron: Asymmetry
, vol.7
, pp. 2199-2202
-
-
Tanaka, K.1
Furuta, T.2
Fuji, K.3
Miwa, Y.4
Taga, T.5
-
26
-
-
1942436908
-
-
b) T. Furuta, K. Tanaka, K. Tsubaki, K. Fuji, Tetrahedron 2004, 60, 4431-4441;
-
(2004)
Tetrahedron
, vol.60
, pp. 4431-4441
-
-
Furuta, T.1
Tanaka, K.2
Tsubaki, K.3
Fuji, K.4
-
27
-
-
0001001058
-
-
addition: 2001, 3, 961-962
-
K. Fuji, T. Furuta, K. Tanaka, Org. Lett. 2001, 3, 169-171; addition: 2001, 3, 961-962.
-
(2001)
Org. Lett.
, vol.3
, pp. 169-171
-
-
Fuji, K.1
Furuta, T.2
Tanaka, K.3
-
28
-
-
31344445887
-
-
note
-
[14c] in which values of 74.7, 79.7 and 113.0° are observed.
-
-
-
-
32
-
-
0020950101
-
-
a) G. Gottarelli, M. Hibert, B. Samorì, G. Solladié, G. P. Spada, R. Zimmermann, J. Am. Chem. Soc. 1983, 105, 7318-7321;
-
(1983)
J. Am. Chem. Soc.
, vol.105
, pp. 7318-7321
-
-
Gottarelli, G.1
Hibert, M.2
Samorì, B.3
Solladié, G.4
Spada, G.P.5
Zimmermann, R.6
-
33
-
-
33845373434
-
-
b) G. Gottarelli, G. P. Spada, R. Bartsch, G. Solladié, R. Zimmermann, J. Org. Chem. 1986, 51, 589-592;
-
(1986)
J. Org. Chem.
, vol.51
, pp. 589-592
-
-
Gottarelli, G.1
Spada, G.P.2
Bartsch, R.3
Solladié, G.4
Zimmermann, R.5
-
34
-
-
37049077819
-
-
c) B. Suchod, A. Renault, J. Lajzerowics, G. P. Spada, J. Chem. Soc. Perkin Trans. 2 1992, 1839-1844;
-
(1992)
J. Chem. Soc. Perkin Trans. 2
, pp. 1839-1844
-
-
Suchod, B.1
Renault, A.2
Lajzerowics, J.3
Spada, G.P.4
-
35
-
-
0000111329
-
-
d) C. Rosini, L. Franzini, P. Salvadori, G. P. Spada, J. Org. Chem. 1992, 57, 6820-6824;
-
(1992)
J. Org. Chem.
, vol.57
, pp. 6820-6824
-
-
Rosini, C.1
Franzini, L.2
Salvadori, P.3
Spada, G.P.4
-
36
-
-
0029082936
-
-
e) C. Rosini, I. Rosati, G. P. Spada, Chirality 1995, 7, 353-358;
-
(1995)
Chirality
, vol.7
, pp. 353-358
-
-
Rosini, C.1
Rosati, I.2
Spada, G.P.3
-
37
-
-
0033950175
-
-
f) M. Bandin, S. Casolari, P. G. Cozzi, G. Proni, E. Schmohel, G. P. Spada, E. Tagliavini, A. Umani-Ronchi, Eur. J. Org. Chem. 2000, 491-497;
-
(2000)
Eur. J. Org. Chem.
, pp. 491-497
-
-
Bandin, M.1
Casolari, S.2
Cozzi, P.G.3
Proni, G.4
Schmohel, E.5
Spada, G.P.6
Tagliavini, E.7
Umani-Ronchi, A.8
-
38
-
-
0033832988
-
-
g) G. Proni, G. P. Spada, P. Lustenberger, R. Welti, F. Diederich, J. Org. Chem. 2000, 65, 5522-5527.
-
(2000)
J. Org. Chem.
, vol.65
, pp. 5522-5527
-
-
Proni, G.1
Spada, G.P.2
Lustenberger, P.3
Welti, R.4
Diederich, F.5
-
39
-
-
3042995991
-
-
H. J. Deussen, P. V. Shibaev, R. Vinokur, T. Bjornholm, K. Schaumburg, K. Bechgaard, V. P. Shibaev, Liq. Cryst. 1996, 21, 327.
-
(1996)
Liq. Cryst.
, vol.21
, pp. 327
-
-
Deussen, H.J.1
Shibaev, P.V.2
Vinokur, R.3
Bjornholm, T.4
Schaumburg, K.5
Bechgaard, K.6
Shibaev, V.P.7
-
40
-
-
0001283478
-
-
A Ferrarini, P. L. Nordio, P. V. Shibaev, V. P. Shibaev, Liq. Cryst. 1998, 24, 219.
-
(1998)
Liq. Cryst.
, vol.24
, pp. 219
-
-
Ferrarini, A.1
Nordio, P.L.2
Shibaev, P.V.3
Shibaev, V.P.4
-
41
-
-
0017476663
-
-
It has been found that the number of carbon atoms between the chirality centre and the central core determines the handedness of the helical structure of the chiral nematic phase: switching this number from odd to even the cholesteric alternates from P to M or vice versa (G. W. Gray, D. G. McDonnell, Mol. Cryst. Liq. Cryst. Lett. 1977, 34, 211).
-
(1977)
Mol. Cryst. Liq. Cryst. Lett.
, vol.34
, pp. 211
-
-
Gray, G.W.1
McDonnell, D.G.2
-
42
-
-
0004130004
-
-
(Eds.: P. J. Collings, J. S. Patel) Oxford University Press, Oxford, Chp. 2
-
For a general discussion on the effect of chirality in liquid crystalline systems, see, for example: a) A. W. Hall, J. Hollingshurst, J. W. Goodby in Handbook of Liquid Crystal Research (Eds.: P. J. Collings, J. S. Patel) Oxford University Press, Oxford, 1997, Chp. 2;
-
(1997)
Handbook of Liquid Crystal Research
-
-
Hall, A.W.1
Hollingshurst, J.2
Goodby, J.W.3
-
44
-
-
0007078374
-
-
For examples of helix inversion with temperature in induced cholesterics, see: a) G. Chilaya, F. Oestreicher, G. Scherowsky, Mol. Materials 2001, 9, 261;
-
(2001)
Mol. Materials
, vol.9
, pp. 261
-
-
Chilaya, G.1
Oestreicher, F.2
Scherowsky, G.3
-
45
-
-
0004091130
-
-
(Eds.: C. Bahr, H.-S. Kitzerow), Springer, Chapter 3, and references therein
-
b) H.-G. Kuball, T. Höfer in Chirality in Liquid Crystals (Eds.: C. Bahr, H.-S. Kitzerow), Springer, 2001, Chapter 3, and references therein.
-
(2001)
Chirality in Liquid Crystals
-
-
Kuball, H.-G.1
Höfer, T.2
-
46
-
-
0000581956
-
-
Cholesteric phases also obtained by chiral mesogens may present helix inversion with temperature; see, for example: B. P. Huff, J. J. Krich, P. J. Collings, Phys. Rev. E 2000, 61, 5372.
-
(2000)
Phys. Rev. E
, vol.61
, pp. 5372
-
-
Huff, B.P.1
Krich, J.J.2
Collings, P.J.3
-
47
-
-
0035690408
-
-
S. M. Todd, A. Ferrarini, G. J. Moro, Phys. Chem. Chem. Phys. 2001, 3, 5535.
-
(2001)
Phys. Chem. Chem. Phys.
, vol.3
, pp. 5535
-
-
Todd, S.M.1
Ferrarini, A.2
Moro, G.J.3
-
48
-
-
0003546549
-
-
(Eds.: N. Berova, K. Nakanishi, R. W. Woody), Wiley-VCH, New York
-
Circular Dichroism -Principles and applications (Eds.: N. Berova, K. Nakanishi, R. W. Woody), Wiley-VCH, New York, 2000.
-
(2000)
Circular Dichroism -principles and Applications
-
-
-
49
-
-
0002192433
-
-
a) S. F. Mason, R. H. Seal, D. R. Roberts, Tetrahedron 1974, 30, 1671-1682;
-
(1974)
Tetrahedron
, vol.30
, pp. 1671-1682
-
-
Mason, S.F.1
Seal, R.H.2
Roberts, D.R.3
-
51
-
-
0346434119
-
-
K. Tsubaki, M. Miura, H. Morikawa, H. Tanaka, T. Kawabata, T. Furuta, K. Tanaka, K. Fuji, J. Am. Chem. Soc. 2003, 125, 16200-16201.
-
(2003)
J. Am. Chem. Soc.
, vol.125
, pp. 16200-16201
-
-
Tsubaki, K.1
Miura, M.2
Morikawa, H.3
Tanaka, H.4
Kawabata, T.5
Furuta, T.6
Tanaka, K.7
Fuji, K.8
-
52
-
-
31344472427
-
-
note
-
In the present case, CD spectroscopy does not allow even a reliable discrimination of compounds differing only for the configuration of one single stereoaxis (out of 3, 5 or 7); compare CD spectra of 2b and 3b.
-
-
-
-
53
-
-
19644400589
-
-
R. B. Selinger, J. V. Selinger, A. P. Malanoski, J. M. Schnur, Phys. Rev. Lett. 2004, 93, 158103.
-
(2004)
Phys. Rev. Lett.
, vol.93
, pp. 158103
-
-
Selinger, R.B.1
Selinger, J.V.2
Malanoski, A.P.3
Schnur, J.M.4
-
54
-
-
18044375296
-
-
M. S. Spector, J. V. Selinger, J. M. Schnur, Top. Stereochem. 2003, 24, 281-372.
-
(2003)
Top. Stereochem.
, vol.24
, pp. 281-372
-
-
Spector, M.S.1
Selinger, J.V.2
Schnur, J.M.3
-
56
-
-
0001651145
-
-
b) G. Gottarelli, B. Samorì, C. Stremmenos, G. Torre, Tetrahedron 1981, 37, 395.
-
(1981)
Tetrahedron
, vol.37
, pp. 395
-
-
Gottarelli, G.1
Samorì, B.2
Stremmenos, C.3
Torre, G.4
-
59
-
-
0030040323
-
-
M. F. Sanner, J.-C. Spehner, A. Olson, Biopolymers 1996, 38, 305.
-
(1996)
Biopolymers
, vol.38
, pp. 305
-
-
Sanner, M.F.1
Spehner, J.-C.2
Olson, A.3
-
60
-
-
31344472173
-
-
Geomview, http://www.geomview.org/
-
-
-
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