Chemistry Reference
In-Depth Information
Y., Kudoh, T. and Saito, S. (2003) Conversion of
D
-glucose to cyclitol with hydroxymethyl
substituent via intramolecular silyl nitronate cycloaddition reaction: application to total
synthesis of (
รพ
)-cyclophellitol. Organic Letters, 5, 3879-3882.
42. Ma, D., Pan, Q. and Han, F. (2002) Diastereoselective Henry reactions of N,N-dibenzyl
a
-amino aldehydes with nitromethane catalysed by enantiopure guanidines. Tetrahedron
Letters, 43, 9401-9403.
43. Sohtome, Y., Takemure, N., Takada, K. et al. (2007) Organocatalytic asymmetric nitroaldol
reaction: cooperative effects of guanidine and thiourea functional groups. Chemistry, an Asian
Journal, 2, 1150-1160; Sohtome, T., Hashimoto, Y. and Nagasawa, K. (2005) Guanidine-
thiourea bifunctional organocatalyst for the asymmetric Henry (nitroaldol) reaction. Advanced
Synthesis and Catalysis, 347, 1643-1648; Sohtome, T., Takemura, N., Iguchi, T. et al. (2006)
Diastereoselective Henry reaction catalysed by guanidine-thiourea bifunctional organocatalyst.
Synlett, 144-146.
44. Terade, M., Nakano, M. and Ube, H. (2006) Axially chiral guanidine as highly active and
enantioselelctive catalyst for electrophilic amination of unsymmetrically substituted 1,3-
dicarbonyl compounds. Journal of the American Chemical Society, 128, 16044-16045.
45. Nysted, L.N. and Burtner, R.R. (1962) Steroidal aldosterone antagonists. VI. The Journal of
Organic Chemistry, 27, 3175-3177.
46. Pollini, G.P., Barco, A. and De Giuli, G. (1972) Tetramethylguanidine-catalysed addition of
nitromethane to
a
,
b
-unsaturated carboxylic acid esters. Synthesis, 44-45; Alvarez, F.S. and
Wren, D. (1973) Synthesis of (
)-deoxyprostaglandin E
1
,F
a
and F
1
b
and its 15
b
-epimers by
conjugate addition of nitromethane to 2-(6
0
-carbomethoxyhexyl)-2-cyclopenten-1-one. Tetra-
hedron Letters, 569-572; Hewson, A.T. and MacPherson, D.T. (1983) Conjugate addition to the
ethylene ketal of 2-carbomethoxy-2-cyclopentenone a synthesis of sarkomycin. Tetrahedron
Letters, 24, 647-648; Naito, T., Honda, Y., Bhavakul, V. et al. (1997) Radical cyclization in
heterocycle synthesis. II. Total synthesis of (
)-anantine and (
)-isoanantine. Chemical &
Pharmaceutical Bulletin, 45, 1932-1939.
47. Barton, D.H.R., Swift, K.A.D. and Tachdjien, C. (1995) The synthesis of 1-hydroxy-3-
phenylsulfonylpiperidine-2-thione derivatives utilizing methylthiocarbonylation as the key
original step. Tetrahedron, 51, 1887-1892.
48. Ye, W., Xu, J., Tan, C.-T. and Tan, C.-H. (2005) 1,5,7-Triazabicyclo[4.4.0]dec-5-ene (TBD)
catalysed Michael reactions. Tetrahedron Letters, 46, 6875-6878.
49. Henderson, D.A., Collier, P.N., Pave, G. et al. (2006) Studies on the total synthesis of
lactonamycin: construction of model ABCD ring systems. The Journal of Organic Chemistry,
71, 2434-2444.
50. Alcazar, V., Moran, J.R. and de Mendoza, J. (1995) Guanidinium catalysed conjugate addition
of pyrrolidine to unsaturated lactones. Tetrahedron Letters, 36, 3941-3944; Martin-Portugues,
M., Alcazar, V., Prados, P. and de Mendoza, J. (2002) Guanidinium-catalysed addition of
pyrrolidine to 2-(5H)-furanone. Tetrahedron, 58, 2951-2955; For the preparation of the related
guanidines, see: Echavarren, A., Galan, A., de Mendoza, J. and Salmeron, A. (1988) Anion-
receptor molecules: synthesis of a chiral and functionalized binding subunit, a bicyclic
guanidinium groups derived from
L
-or
D
-asparagine. Helvetica Chimica Acta, 71, 685-
693; Gleich, A. and Schmidtchen, F.P. (1990) Artificial molecular anion hosts. Synthesis of a
chiral bicyclic guanidinium salt serving as a functionalized anchor group for oxo anions.
Chemische Berichte, 123, 907-915.
51. Ishikawa, T., Araki, Y., Kumamoto, T. et al. (2001) Modified guanidines as chiral supedrbases:
application to asymmetric Michael reaction of glycine imine with acrylate or its related
compounds. Chemical Communications, 245-246.
52. Ryuda, A., Yajima, N., Haga, T. et al. (2008) (
)-1,2-Bis(2-methylphenyl)ethylene-1,2-
diamine as a chiral framework for 2-iminoimidazolidine with 2-methylphenyl pendant and the
guanidine-catalysed asymmetric Michael reaction of tert-butyl diphenyliminoacetate and ethyl
acrylate. The Journal of Organic Chemistry, 73, 133-141.
53. Kumamoto, T., Ebine, K., Endo, M. et al. (2005) Guanidine-catalysed asymmetric addition
reactions: Michael reaction of cyclopentenone with dibenzyl malonates and epoxidation of
chalcone. Heterocycles, 66, 347-359.
