Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent
Reexamination Certificate
2002-07-25
2009-11-17
Wilson, James O (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Chalcogen in the nitrogen containing substituent
Reexamination Certificate
active
07619082
ABSTRACT:
The invention relates to a process for the preparation of a compound of the formula (I) by reacting a compound of the formula (II) with a compound of the formula (III) characterized by dissolving the compounds of the formula (II) and formula (III) in a water-inmiscible organic solvent in the presence of a phase transfer catalyst, reacting with a.) an aqeuos solution of a base, or b.) a base in solid form directly and if desired transforming the compound of formula (I) thus obtained into its salt.
REFERENCES:
patent: 6046341 (2000-04-01), Foulon et al.
patent: 6548702 (2003-04-01), Gonczi et al.
patent: 6600039 (2003-07-01), Heja et al.
patent: WO 97/15556 (1997-05-01), None
patent: WO 01/05791 (2001-01-01), None
H. Venkatesan et al., The Journal of Organic Chemistry, vol. 66, No. 11, pp. 3653-3661(2001).
IIIi, Synthesis, No. 2, p. 136 (1979).
Jones, K., et al., Chiral Induction in Aryl Radical Cyclisations, Tetrahedron Letters, vol. 30, No. 20, 2657-2660, 1989.
Sleboka-Tilt, et al., O Exchange Accompanying the Basic Hydrolysis of Primary, Secondary, and Tertiary Toluamides. 2. The Importance of Amine Leaving Abilities from the Anionic Tetrahedral Intermediates, J. Am. Chem. Soc., vol. 112, No. 23; 1990; 8507-8514.
Ohgawara, Phase Transfer Catalyst, Ghoseishiyaku, Khodansha (1980), pp. 188-189 (with English translation).
Rao et al., Synthesis and Reactions of 2-Bis(methylthio)methylene-1-methy1-3-oxoindole: A Facile Access to Benzo- and Heterocyclo-Fused Carbazoles and Indoles, Tetrahedron 55 (1999), pp. 11563-11578.
Phase Transfer Catalyst, Shokubaikouza, Khodansha (1986), Chapter 8, vol. 10. pp. 164-165 (with English translation).
Csikós Eva
Csutor Andrea Sántáné
Gönczi Csaba
Hajdú Félix
Heja Gergely
Morrill Brian R.
Sackey Ebenezer
sanofi-aventis
Wilson James O
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