Claims
- 1. A method for the preparation of 4-[5-(4-chlorophenyl)-3-trifluoromethyl)-1H-pyrazol-1-yl]benzenesulfonamide wherein the method comprises:contacting ethyl trifluoroacetate with 4-chloroacetophenone in the presence of sodium methoxide and an ether solvent to form 4,4,4-trifluoro-1-[4-(chloro)phenyl]-butane-1,3-dione; and contacting the 4,4,4-trifluoro-1-[4-(chloro)phenyl]-butane-1,3-dione with 4-sulphonamidophenyl hydrazine hydrochloride in the presence of absolute ethyl alcohol under reflux to produce 4-[5-(4-chlorophenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl]benzenesulfonamide.
Parent Case Info
This is a continuation of application Ser. No. 10/125,325 filed Apr. 17, 2002, now U.S. Pat. No. 6,492,411 which is a continuation of Ser. No. 09/609,011 filed May 30, 2000, now U.S. Pat. No. 6,413,960 which is a continuation of Ser. No. 09/449,076, filed Nov. 24, 1999, now U.S. Pat. No. 6,156,781 which is a continuation of Ser. No. 08/957,345, filed Oct. 24, 1997, now abandoned, which is a continuation of Ser. No. 08/648,113, filed Sep. 6, 1996, now issued as U.S. Pat. No. 5,760,068, which is a continuation of PCT/US94/12720, filed Nov. 11, 1994, which is a continuation of Ser. No. 08/223,629, filed Apr. 6, 1994, now issued as U.S. Pat. No. 5,521,207, which is a continuation-in-part of Ser. No. 08/160,594, filed Nov. 30, 1993, now issued as U.S. Pat. No. 5,466,823.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3940418 |
Hamilton |
Feb 1976 |
A |
4146721 |
Rainer |
Mar 1979 |
A |
5892053 |
Zihi et al. |
Apr 1999 |
A |
Foreign Referenced Citations (5)
Number |
Date |
Country |
9475753 |
Oct 1993 |
AU |
347773 |
Dec 1989 |
EP |
477049 |
Mar 1992 |
EP |
554829 |
Aug 1993 |
EP |
WO 9414777 |
Jul 1994 |
WO |
Non-Patent Literature Citations (17)
Entry |
R. Soliman et al., J. Pharm. Sci., 76, 626 (1987). |
H. Mokhtar, Pak. J. Sci. Ind. Res., 31, 762 (1988). |
H. Mokhtar et al., Pak. J. Sci. Ind. Res., 34, 9 (1991). |
M. Cocco et al, II. Farmaco-Ed. Sci., 40, 272 (1985). |
R. Soliman et al, J. Pharm. Sci., 72, 1004 (1983). |
H. Feid-Allah, Pharmazie, 36, 754 (1981). |
R. Soliman et al, J. Pharm. Sci., 70, 602 (1981). |
Maybridge Chemical Co./Ryan Scientific Catalog, Compound No. BTB 06812. |
H. Mokhtar et al, Pak. J. Sci. Ind. Res., 33:30-36 (1990). |
H. Mokhtar et al, J. Chem. Soc. Pak., 10:414-424 (1988). |
R. Soliman et al, J. Pharm. Sci., 72:999-1004 (1983). |
M.S. I. Makki et al, Chem. Abstracts, 121:134017 (1994). |
R. Hamilton, J. Heterocyclic Chem., 13, 545 (1976). |
M. Hashem et al, J. Med. Chem., 19, 229 (1976). |
H. Feid-Allah, J. Heterocyclic Chem., 18, 1561 (1981). |
H. Mokhtar et al, Pharmazie, 33, 649 (1978). |
R. Soliman et al, Pharmazie, 33 (1978). |
Continuations (7)
|
Number |
Date |
Country |
Parent |
10/125325 |
Apr 2002 |
US |
Child |
10/274679 |
|
US |
Parent |
09/609011 |
May 2000 |
US |
Child |
10/125325 |
|
US |
Parent |
09/449076 |
Nov 1999 |
US |
Child |
09/609011 |
|
US |
Parent |
08/957345 |
Oct 1997 |
US |
Child |
09/449076 |
|
US |
Parent |
08/648113 |
Sep 1996 |
US |
Child |
08/957345 |
|
US |
Parent |
PCT/US94/12720 |
Nov 1994 |
US |
Child |
08/648113 |
|
US |
Parent |
08/223629 |
Apr 1994 |
US |
Child |
PCT/US94/12720 |
|
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
08/160594 |
Nov 1993 |
US |
Child |
08/223629 |
|
US |