Claims
- 1. A compound of the formula 2 in which R1 and R2 together are O (oxygen) or an ethylenedioxy radical (—O—CH2—Ch12—O—), R3 is hydrogen or cyano (CN), R4 is hydrogen, methyl or trifluoromethyl or their salts and their N-oxides.
- 2. A compound of the formula 2 as claimed in claim 1, in which R1 and R2 together are an ethylenedioxy radical (—O—CH2—CH2—O—), R3 is hydrogen and R4 is hydrogen, methyl or trifluoromethyl, or its salts.
- 3. A compound of the formula 2 as claimed in claim 1, in which R1 and R2 together are O (oxygen), R3 is cyano (CN) and R4 is hydrogen, methyl or trifluoromethyl, or its salts.
- 4. A process for the preparation of the compounds of the formula 2 as claimed in claim 1, in which R1 and R2 together are O (oxygen), R3 is cyano (CN) and R4 is hydrogen, methyl or trifluoromethyl, or its salts, which comprises alkylating the N-oxide of the compound of the formula 2 as claimed in claim 1, in which R1 and R2 together are an ethylenedioxy radical (—O—CH2—CH2—O—), R3 is hydrogen and R4 is hydrogen, methyl or trifluoromethyl, then reacting it with a cyanide and then working up.
Priority Claims (1)
Number |
Date |
Country |
Kind |
100 01 037 |
Jan 2000 |
DE |
|
Parent Case Info
This the application is divisional application of U.S. patent application Ser. No. 10/149,290, filed Jun. 11, 2002, now U.S. Pat. No. 6,716,990, which is an application under 35 U.S.C. §371 of International Application No. PCT/EP01/00261 having an International Filing Date of Jan. 11, 2001, the consents of which are hereby incorporated by reference in its entirely.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
6197783 |
Senn-Bilfinger et al. |
Mar 2001 |
B1 |
6716990 |
Ulrich et al. |
Apr 2004 |
B2 |
Foreign Referenced Citations (3)
Number |
Date |
Country |
0033094 |
Aug 1981 |
EP |
9837080 |
Aug 1998 |
WO |
1042707 |
Oct 1998 |
WO |