Abstract: A compound of Formula 2 is disclosed wherein R1, MA and MB are as defined in the disclosure. Also disclosed is a method for preparing a compound of Formula 1 wherein RI and X are as defined in the disclosure comprising contacting a compound of Formula 2 with a halogenating agent. Also disclosed is a method for preparing a compound of Formula 4 wherein R1, R3 and R4 are as defined in the disclosure, comprising reacting a compound of Formula 5 wherein R3 and R4 are as defined in the disclosure with a compound of Formula 1, with a compound of Formula 1, the process of preparing the compound of Formula 4 includes the step of preparing the compound of Formula 1 from the compound of Formula 2 by the method disclosed above. Also disclosed is compound that is methyl 3,5-dichlorobenzeneethanimidate methyl 3,5-dichlorobenzeneethanimidate or ethyl 3,5-dichlorobenzeneethanimidate or salts thereof.
Abstract: The invention relates to a novel process for preparing phthaloyl chloride (benzene-1,2-dicarbonyl chloride) by reacting phthalic anhydride with phosgene in the presence of a specific N,N-disubstituted formamide as a catalyst.
Abstract: The present invention provides process for the preparation of chlorocarbonyl chlorides of the formula I
R1—CHCl—Y—COCl (I),
where
R1 is for example hydrogen or C1- to C20-alkyl and
Y is for example a saturated or mono- or polyolefinically unsaturated C2-C8-alkylene chain,
by reacting lactones with a chlorinating agent in the presence of a urea compound.
Type:
Grant
Filed:
April 20, 2000
Date of Patent:
July 17, 2001
Assignee:
BASF Aktiengesellschaft
Inventors:
Hans-Jürgen Weyer, Armin Stamm, Theodor Weber, Jochem Henkelmann
Abstract: Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.
Type:
Grant
Filed:
March 11, 1988
Date of Patent:
January 2, 1990
Assignee:
Amoco Corporation
Inventors:
Robert A. Clendinning, James E. Harris, Donald R. Kelsey, Markus Matzner, Lloyd M. Robeson, Paul A. Winslow, Louis M. Maresca
Abstract: An N-alkylated formamide of the formula ##STR1## wherein R.sup.1 denotes alkylR.sup.2 denotes alkyl with at least 9 carbon atoms or the group ##STR2## wherein A denotes straight-chain or branched alkanediyl,R.sup.1 denotes lower alkyl andn denotes an integer from 2 to 6,a process for the preparation of the same and its use in the replacement of a hydroxyl group in an organic compound by chlorine or bromine the improvement wherein the replacement is carried out in the presence of an N-alkylated formamide.
Type:
Grant
Filed:
September 17, 1986
Date of Patent:
November 14, 1989
Assignee:
Bayer Aktiengesellschaft
Inventors:
Heinz U. Blank, Norbert Langenfeld, Wolfgang Heydkamp