Patent number: 6794336
Abstract: The present invention relates to a compound of the formula (I) or salt thereof
in which
R1 is identical or different at each occurrence and is H, halogen, CN, nitro, SF5, (C1-C8)alkyl, (C2-C8)alkenyl, (C2-C8)alkynyl, (C1-C8)alkoxy, [(C1-C8)alkyl]-carbonyl or (C1-C8)alkylsulfonyl, each of the radicals being unsubstituted or substituted,
or is S(O)p—R7, where
p=0, 1 or 2 and
R7 is (C1-C8)alkyl, (C1-C8)haloalkyl or NR8R9, where
R8 and R9 independently of one another are identical or different and are H, (C1-C8)alkyl, (C2-C8)alkenyl, (C7-C10)arylalkyl, (C7-C10)alkylaryl or (C6-C10)aryl, each of the last-mentioned five radicals being unsubstituted or substituted,
or is a group of the formula
where R10 is (C1-C8)alkyl which is unsubstituted or substituted, and
W=O or S,
A is optionally substituted aryl or an optionally substituted heterocyclic radical,
X is O or S,
R2,R3,R4, and R5 are identical or different and are H, hal
Type:
Grant
Filed:
June 21, 2002
Date of Patent:
September 21, 2004
Assignee:
Aventis Crop Science GmbH
Inventors:
Klaus Haaf, Lothar Willms, Thomas Auler, Hubert Menne, Hermann Bieringer
Patent number: 6747154
Abstract: A process for preparing a compound of formula 1
from a compound of formula 2
the process comprising reacting in one step the compound of formula 2 with a compound of formula 3
wherein:
X− is chlorine, bromine, iodine, methanesulfonate, or trifluoromethanesulfonate;
R1 is hydroxy, C1-C4-alkyl, C1-C4-alkoxy, CF3, or fluorine;
Ar is phenyl, naphthyl, thienyl, and furyl, each optionally mono- or disubstituted with one or two groups selected from C1-C4-alkyl, C1-C4-alkoxy, hydroxy, fluorine, chlorine, bromine, or CF3;
Y− is chlorine, bromine, iodine, methanesulfonate, or trifluoromethanesulfonate; and
R is hydroxy, methoxy, ethoxy, O—N-succinimide, O—N-phthalimide, phenyloxy, nitrophenyloxy, fluorophenyloxy, pentafluorophenyloxy, vinyloxy, 2-allyloxy, —S-methyl, —S-ethyl, or —S-phenyl.
Type:
Grant
Filed:
January 9, 2003
Date of Patent:
June 8, 2004
Assignee:
Boehringer Ingelheim Pharma GmbH & Co. KG
Inventors:
Joerg Brandenburg, Waldemar Franz-Augustin Pfrengle, Werner Rall