-
3
-
-
0027534617
-
-
Resul, B.; Stjernschantz, J.; No, K.; Liljebris, C.; Selen, G.; Astin, M.; Karlsson, M.; Bito, L. Z. J. Med. Chem. 1993, 36, 243
-
(1993)
J. Med. Chem.
, vol.36
, pp. 243
-
-
Resul, B.1
Stjernschantz, J.2
No, K.3
Liljebris, C.4
Selen, G.5
Astin, M.6
Karlsson, M.7
Bito, L.Z.8
-
4
-
-
0034923622
-
-
Sorbera, L. A.; Leeson, P. A.; Rabasseda, X.; Castaner, J. Drugs Future 2001, 26, 433
-
(2001)
Drugs Future
, vol.26
, pp. 433
-
-
Sorbera, L.A.1
Leeson, P.A.2
Rabasseda, X.3
Castaner, J.4
-
5
-
-
77951274423
-
-
Yolin, S.; Walt, J. G.; Earl, M. Dermatol. Surg. 2010, 36, 638
-
(2010)
Dermatol. Surg.
, vol.36
, pp. 638
-
-
Yolin, S.1
Walt, J.G.2
Earl, M.3
-
8
-
-
33845301207
-
-
Wang, Y.; Bolos, J.; Serradell, N. Drugs Future 2006, 31, 788
-
(2006)
Drugs Future
, vol.31
, pp. 788
-
-
Wang, Y.1
Bolos, J.2
Serradell, N.3
-
9
-
-
2642517752
-
-
Sobera, L. A.; Castaner, J.; Mealy, N. E. Drugs Future 2004, 29, 336
-
(2004)
Drugs Future
, vol.29
, pp. 336
-
-
Sobera, L.A.1
Castaner, J.2
Mealy, N.E.3
-
10
-
-
21844444261
-
-
Obadalová, I.; Pilarčík, T.; Slavíková , M.; Hájíček, J. Chirality 2005, 17, S109
-
(2005)
Chirality
, vol.17
, pp. 109
-
-
Obadalová, I.1
Pilarčík, T.2
Slavíková, M.3
Hájíček, J.4
-
11
-
-
84871565614
-
-
U.S. Patent 7,897,795
-
Henschke, J. P.; Liu, Y. L.; Chen, Y. F.; Meng, D. C.; Sun, T. U.S. Patent 7,897,795, 2011.
-
(2011)
-
-
Henschke, J.P.1
Liu, Y.L.2
Chen, Y.F.3
Meng, D.C.4
Sun, T.5
-
12
-
-
0014689626
-
-
Corey, E. J.; Weinshenker, N. M.; Schaaf, T. K.; Huber, W. J. Am. Chem. Soc. 1969, 91, 5675
-
(1969)
J. Am. Chem. Soc.
, vol.91
, pp. 5675
-
-
Corey, E.J.1
Weinshenker, N.M.2
Schaaf, T.K.3
Huber, W.4
-
13
-
-
0015513705
-
-
Sih, C. J.; Price, P.; Sood, R.; Salomon, R. G.; Peruzzotti, G.; Casey, M. J. Am. Chem. Soc. 1972, 94, 3643
-
(1972)
J. Am. Chem. Soc.
, vol.94
, pp. 3643
-
-
Sih, C.J.1
Price, P.2
Sood, R.3
Salomon, R.G.4
Peruzzotti, G.5
Casey, M.6
-
14
-
-
0015434651
-
-
Kluge, A. F.; Untch, K. G.; Fried, J. H. J. Am. Chem. Soc. 1972, 94, 7827
-
(1972)
J. Am. Chem. Soc.
, vol.94
, pp. 7827
-
-
Kluge, A.F.1
Untch, K.G.2
Fried, J.H.3
-
16
-
-
0021529187
-
-
Noyori, R.; Suzuki, M. Angew. Chem., Int. Ed. Engl. 1984, 23, 847
-
(1984)
Angew. Chem., Int. Ed. Engl.
, vol.23
, pp. 847
-
-
Noyori, R.1
Suzuki, M.2
-
17
-
-
0021955919
-
-
Suzuki, M.; Yanagisawa, A.; Noyori, R. J. Am. Chem. Soc. 1985, 107, 3348
-
(1985)
J. Am. Chem. Soc.
, vol.107
, pp. 3348
-
-
Suzuki, M.1
Yanagisawa, A.2
Noyori, R.3
-
18
-
-
34547503013
-
-
Das, S.; Chandrasekhar, S.; Yadav, J. S.; Grée, R. Chem. Rev. 2007, 107, 3286
-
(2007)
Chem. Rev.
, vol.107
, pp. 3286
-
-
Das, S.1
Chandrasekhar, S.2
Yadav, J.S.3
Grée, R.4
-
19
-
-
0016347398
-
-
Gruber, L.; Tömösközi, I.; Major, E.; Kovács, G. Tetrahedron Lett. 1974, 3729
-
(1974)
Tetrahedron Lett.
, pp. 3729
-
-
Gruber, L.1
Tömösközi, I.2
Major, E.3
Kovács, G.4
-
20
-
-
0017650277
-
-
Collins, P. W; Dajani, E. Z.; Driskill, D. R.; Bruhn, M. S.; Jung, C. J; Pappo, R. J. Med. Chem. 1977, 20, 1152
-
(1977)
J. Med. Chem.
, vol.20
, pp. 1152
-
-
Collins, P.W.1
Dajani, E.Z.2
Driskill, D.R.3
Bruhn, M.S.4
Jung, C.J.5
Pappo, R.6
-
21
-
-
46549100186
-
-
Novák, L.; Szántay, Cs.; Meisel, T.; Aszódi, J.; Szabó, é.; Fekete, J. Tetrahedron 1985, 41, 435
-
(1985)
Tetrahedron
, vol.41
, pp. 435
-
-
Novák, L.1
Szántay, Cs.2
Meisel, T.3
Aszódi, J.4
Szabó, E.5
Fekete, J.6
-
24
-
-
0000780226
-
-
Babiak, K. A.; Ng, J. S.; Dygos, J. H.; Weyker, C. L.; Wang, Y.-F.; Wong, C.-H. J. Org. Chem. 1990, 55, 3377
-
(1990)
J. Org. Chem.
, vol.55
, pp. 3377
-
-
Babiak, K.A.1
Ng, J.S.2
Dygos, J.H.3
Weyker, C.L.4
Wang, Y.-F.5
Wong, C.-H.6
-
25
-
-
84871563407
-
-
U.S. Patent 5,106,750
-
Wong, C.-H.; Wang, Y.-F.; Hennen, W. J.; Babiak, K. A.; Dygos, J. H.; Ng, J. S. U.S. Patent 5,106,750, 1992.
-
(1992)
-
-
Wong, C.-H.1
Wang, Y.-F.2
Hennen, W.J.3
Babiak, K.A.4
Dygos, J.H.5
Ng, J.S.6
-
26
-
-
0039926409
-
-
Facile, autocatalytic decomposition (contact with only 0.2 equiv of ylide caused full decomposition) of the 4-silyloxy substituent via deprotonation α- to the aldehyde was proposed to be responsible for its base sensitivity. By contrast, when the 4-silyloxy substituent is absent, successful Wittig reaction with the identical ylide is possible (see Armstead, D. A.; Mann, J. Synth. Commun. 1985, 15, 1147)
-
(1985)
Synth. Commun.
, vol.15
, pp. 1147
-
-
Armstead, D.A.1
Mann, J.2
-
27
-
-
0031491564
-
-
See Ahrgren, L.; Sutin, L. Org. Process Res. Dev. 1997, 1, 425 for a description of a Sharpless asymmetric dihydroxylation on an industrial scale
-
(1997)
Org. Process Res. Dev.
, vol.1
, pp. 425
-
-
Ahrgren, L.1
Sutin, L.2
-
28
-
-
33845280103
-
-
2PHAL provided a significant and useful rate acceleration; see Jacobsen, E. N.; Markó, I.; Mungall, W. S.; Schröder, G.; Sharpless, K. B. J. Am, Chem. Soc. 1988, 110, 1968
-
(1988)
J. Am, Chem. Soc.
, vol.110
, pp. 1968
-
-
Jacobsen, E.N.1
Markó, I.2
Mungall, W.S.3
Schröder, G.4
Sharpless, K.B.5
-
29
-
-
33746649766
-
-
and references therein
-
Although we had ready access to this ligand and with it only being used at 0.4 mol%, cheaper ligands and modified reaction conditions may provide similar results (see Eames, J.; Mitchell, H. J.; Nelson, A.; O'Brien, P.; Warren, S.; Wyatt, P. J. Chem. Soc., Perkin Trans. 1 1999, 1095 and references therein)
-
(1999)
J. Chem. Soc., Perkin Trans. 1
, pp. 1095
-
-
Eames, J.1
Mitchell, H.J.2
Nelson, A.3
O'Brien, P.4
Warren, S.5
Wyatt, P.6
-
30
-
-
0023546991
-
-
The addition of metalated derivatives of 1-bromo-2,2-dimethoxyethane to furfural, in an analogous fashion to that report Collins, P. W.; Kramer, S. W.; Gullikson, G. W. J. Med. Chem. 1987, 30, 1952 for a homologue of aldehyde 4 has shown promise.
-
(1987)
J. Med. Chem.
, vol.30
, pp. 1952
-
-
Collins, P.W.1
Kramer, S.W.2
Gullikson, G.W.3
-
31
-
-
0036306488
-
-
Boulton, L. T.; Brick, D.; Fox, M. E.; Jackson, M.; Lennon, I. C.; McCague, R.; Parkin, N.; Rhodes, D.; Ruecroft, G. Org. Process Res. Dev. 2002, 6, 138
-
(2002)
Org. Process Res. Dev.
, vol.6
, pp. 138
-
-
Boulton, L.T.1
Brick, D.2
Fox, M.E.3
Jackson, M.4
Lennon, I.C.5
McCague, R.6
Parkin, N.7
Rhodes, D.8
Ruecroft, G.9
-
32
-
-
33845375469
-
-
Reitz, A. B.; Nortey, S. O.; Jordan, A. D., Jr.; Mutter, M. S.; Maryanoff, B. E. J. Org. Chem. 1986, 51, 3302
-
(1986)
J. Org. Chem.
, vol.51
, pp. 3302
-
-
Reitz, A.B.1
Nortey, S.O.2
Jordan Jr., A.D.3
Mutter, M.S.4
Maryanoff, B.E.5
-
33
-
-
84857255440
-
-
Berndt, M.; Hölemann, A.; Niermann, A.; Bentz, C.; Zimmer, R.; Reissig, H. -U. Eur. J. Org. Chem. 2012, 1299
-
(2012)
Eur. J. Org. Chem.
, pp. 1299
-
-
Berndt, M.1
Hölemann, A.2
Niermann, A.3
Bentz, C.4
Zimmer, R.5
Reissig, H.-U.6
-
34
-
-
0025811537
-
-
Dygos, J. H.; Adamek, J. P.; Babiak, K. A.; Behling, J. R.; Medich, J. R.; Ng, J. S.; Wieczorek, J. J. J. Org. Chem. 1991, 56, 2549
-
(1991)
J. Org. Chem.
, vol.56
, pp. 2549
-
-
Dygos, J.H.1
Adamek, J.P.2
Babiak, K.A.3
Behling, J.R.4
Medich, J.R.5
Ng, J.S.6
Wieczorek, J.J.7
-
35
-
-
49349131844
-
-
Piancatelli, G.; Scettri, A.; David, G.; D'Auria, M. Tetrahedron 1978, 34, 2775
-
(1978)
Tetrahedron
, vol.34
, pp. 2775
-
-
Piancatelli, G.1
Scettri, A.2
David, G.3
D'Auria, M.4
-
36
-
-
0041918113
-
-
Rodríguez, A.; Nomen, M.; Spur, B. W.; Godfroid, J. -J. Eur. J. Org. Chem. 1999, 2655
-
(1999)
Eur. J. Org. Chem.
, pp. 2655
-
-
Rodríguez, A.1
Nomen, M.2
Spur, B.W.3
Godfroid, J.-J.4
-
38
-
-
84856195259
-
-
From a toxicological and environmental standpoint, 1,4-dioxane is an undesirable solvent; see Laird, T. Org. Process Res. Dev. 2012, 16, 1
-
(2012)
Org. Process Res. Dev.
, vol.16
, pp. 1
-
-
Laird, T.1
-
39
-
-
0033966783
-
-
Its impact was reduced by its use at only moderate volume/weight ratios (∼5-7 v/w) with an approximately equal portion of water. No 1,4-dioxane was detected in the target compounds by headspace GC analysis. Although the Piancatelli rearrangement has been reported to proceed in aq acetone, it was reported(32) to provide "poor yields" and "extremely low rate" when the substituent α- to the hydroxyl group was non-aromatic. Unfortunately solubility proved to be a constraint when using a completely aqueous system; see D'Auria, M. Heterocycles 2000, 52, 185 for the rearrangement.
-
(2000)
Heterocycles
, vol.52
, pp. 185
-
-
D'Auria, M.1
-
40
-
-
84871590723
-
-
U.S. Patent 7,109,371, (and refs 31 and 33 herein)
-
In related prostaglandin analogue syntheses using similar conditions, yields of 40-72% for the sequential rearrangement and isomerisation have been reported; see Clissold, D. W.; Craig, S. W.; Gadikota, R. R.; He, M.; Jurayj, J. F.; Kazerani, S.; Rannala, E.; Sharma, P. K. U.S. Patent 7,109,371, 2006, (and refs 31 and 33 herein). Addition of 0.1-110 mol% hydroquinone, conducting the reaction in the dark or under an inert atmosphere have so far proven unhelpful. A future solvent screen to eliminate the use of dioxane altogether, or to minimise its volume further, should focus on water-miscible ethers or alcohols (transesterification needs to be taken into account), and a reinvestigation of the use of acetone is required.
-
(2006)
-
-
Clissold, D.W.1
Craig, S.W.2
Gadikota, R.R.3
He, M.4
Jurayj, J.F.5
Kazerani, S.6
Rannala, E.7
Sharma, P.K.8
|