The disclosure herein pertains to the preparation of N-(alkoxymethyl)- and other N-methylene ether-substituted 2-haloacetamides from other N-methylene ether-substituted 2-haloacetamides and the appropriate alcohol by a transetherification process.
A process for the in-solvent, in-situ generation of N-substituted-2-haloacetanilides
申请人:MONSANTO COMPANY
公开号:EP0037656A1
公开(公告)日:1981-10-14
The present invention is directed to a process for the preparation of certain N-substituted -2-haloacetanilides via the reaction of a secondary 2-haloacetanilide with a haloalkyl ether, particularly, halomethyl ethers, which comprises forming the ether in situ by the in-solvent reaction of an alcohol, formaldehyde or other aldehyde and an acid halide to produce high purity haloalkyl ethers, while decreasing the concentration of undesirable bis by products, as for example bis(chloromethyl) ether. The ether formed in situ thereafter reacts with the secondary 2-haloacetanilide in the presence of a phase transfer catalyst and base to form the N-substituted-2-haloacetanilide.
Use of 2,4-disubstituted-5-thiazolecarboxylic acids and derivatives for reducing injury to crop plants by acetamide herbicides
申请人:MONSANTO COMPANY
公开号:EP0064353A1
公开(公告)日:1982-11-10
2,4-Disubstituted-5-thiazolecarboxylic acids and derivatives thereof have been found to reduce herbicidal injury of corn, rice and sorghum plants due to the application thereto of an acetamide herbicide selected from the ethyl ester of N-chloroacetyl-N-(2,6-diethylphenyl) glycine; 2-chloro-2',3'-dimethyl-N-(isopropyl)acetanilide; 2-chloro-2',6'-dimethyl-N-(1-pyrazolymethyl)acetanilide; 2-chloro-6'-trifluoromethyl-N-(isopropoxymethyl)acetanilide; 2-chloro-2'-methyl-6'-trifluoromethyl-N-(isopropoxymethyl)-acetanilide; 2-chloro-2'-methyl-6'-methoxy-N-(isopropoxymethyl)acetanilide; 2-chloro-2'-methyl-6'-methoxy-N-(propoxymethyl)acetanilide; 2-chloro-2'-methyl-6'-ethoxy-N-(propoxymethyl)acetanilide; 2-chloro-2'-isobutoxy-6'-methyl-N-(propoxymethyl)acetanilide; 2-chloro-2'-isobutoxy-6'-ethyl-N-(ethoxymethyl)acetanilide; and 2-chloro-2'-methyl-6'-trifluoromethyl-N-(ethoxymethyl)acetanilide.
3,5-Bis (trifluoromethyl) phenoxy carboxylic acids and derivatives thereof
申请人:MONSANTO COMPANY
公开号:EP0088066A1
公开(公告)日:1983-09-07
3,5-Bis (trifluoromethyl)phenoxy carboxylic acids and derivatives thereof have been found to reduce herbicidal injury of certain food crops, especially grain sorghum, due to the application thereto of herbicides that kill or control weeds that impede the yield of the crops.
In vitro method to detect allergic reactions to low molecular weight chemicals
申请人:Monsanto Company
公开号:EP0265411A2
公开(公告)日:1988-04-27
This invention relates to the use of IgE sensitized basophiles and mast cells in in vitro tests to determine histamine release when challenged with small molecular weight chemical haptens conjugated to protein, e.g., human serum albumin.