Abstract: Fungicidal compounds of the formula: ##STR1## wherein R.sub.3 is hydrogen, R.sub.4 is phenyl optionally substituted with one halogen, and R.sub.5 is alkyl having up to 5 carbon atoms, alkenyl having up to 5 carbon atoms, alkynyl having up to 5 carbon atoms or monochlorophenoxymethyl or R.sub.5 is benzyl optionally ring substituted with up to three substituents selected from the class consisting of halogen, alkyl having up to 4 carbon atoms and alkoxy having up to 4 carbon atoms, or a fungicidal acid salt of such a compound.
Type:
Grant
Filed:
February 27, 1978
Date of Patent:
February 9, 1982
Assignee:
Imperial Chemical Industries Limited
Inventors:
Sugavanam Balassubramanyan, Margaret C. Shephard
Abstract: Procecss for the preparation of alkyl aryl ethers by reacting phenols with aliphatic ethers in the presence of strongly acid cation exchangers.
Abstract: Compounds are disclosed which have a juvenile hormone action on insects and also exhibit acaricide action. Said compounds are unsaturated aliphatic compounds having a trichloromethyl end group and the other end group of which is a phenol group which may be substituted and/or condensed, and which are capable of hindering the growth of insects from the larval to the adult stage and also exhibit an acaricide action on both adult acari and their eggs.
Abstract: A process for the telomerization of dienes with a telomerizing compound containing a mobile hydrogen atom is disclosed wherein the reaction between the diene and the telomerizing agent is effected in the presence of a catalytic system comprising a water-soluble sulfonated triaryl phosphine compound, preferably a water-soluble salt of a mono-, di-, or trisulfonated triphenyl phosphine and a transition metal compound, preferably palladium or a palladium-containing compound. Water is added either before or after the reaction is completed and the reaction products can easily be separated from the aqueous catalyst solution.
Abstract: This invention relates to a novel process for the direct trifluoromethylation of aromatic compounds via carbon tetrachloride and hydrogen fluoride in the presence of strong Bronsted or Lewis acids which give an acidic reaction (increase in concentration of H.sub.2 F.sup.+ ions) in anhydrous hydrogen fluoride.
Abstract: A process for the preparation of a substituted fluorobenzene of the formula ##STR1## in which R is alkyl, alkoxy, halogen, amino, acylamido, carboxyl, benzyloxy, aryloxy, or benzyloxy or aryloxy carrying at least one alkyl, alkoxy, halogen or halogenoalkyl substituent,R.sup.1 each independently is alkyl or halogen, andn is an integer from 0 to 4, comprising reacting an N-aryl-N',N'-dialkyl-triazene of the formula ##STR2## in which Alkyl is alkyl with 1 to 4 carbon atoms, with about a 5 to 25-fold molar excess of anhydrous hydrofluoric acid at a temperature between about -20.degree. and +150.degree. C.
Type:
Grant
Filed:
November 7, 1977
Date of Patent:
March 18, 1980
Assignee:
Bayer Aktiengesellschaft
Inventors:
Heinz Forster, Hans Klusacek, Arthur Wenz
Abstract: Phenol ethers are prepared by reacting phenols with dialkyl carbonates in the presence of tertiary amines and/or phosphines. The aralkyl aryl ethers and alkyl aryl ethers obtained are starting materials for the manufacture of dyes, crop protection agents and scents.
Type:
Grant
Filed:
June 15, 1978
Date of Patent:
March 11, 1980
Assignee:
BASF Aktiengesellschaft
Inventors:
Franz Merger, Friedrich Towae, Ludwig Schroff, deceased
Abstract: Fluoroorganic compounds are prepared by reacting a haloorganic starting material in which at least one halo atom is replaceable with a fluorine atom by metathetical exchange, with calcium fluoride in the presence of a crown ether and an anhydrous, polar, basic organic solvent which complexes with the calcium ion and contains no --OH groups, at a temperature and for a period of time adequate to effect fluorination.
Type:
Grant
Filed:
October 30, 1978
Date of Patent:
November 13, 1979
Assignee:
Allied Chemical Corporation
Inventors:
Francis E. Evans, Morris B. Berenbaum, Richard E. Eibeck, Martin A. Robinson
Abstract: A new process and intermediates for preparing 2,3-dichloro-4-(2-thenoyl)phenoxyacetic acid (ticrynafen, a diuretic agent) using as a key reaction a Friedel-Crafts acylation of an esterified 3-(2,3-dichlorophenoxy)-1,2-propanediol using a thenoyl halide.
Type:
Grant
Filed:
November 2, 1977
Date of Patent:
August 28, 1979
Assignee:
SmithKline Corporation
Inventors:
Antonietta R. Mastrocola, Robert L. Webb
Abstract: An improvement in a process for the preparation of a pinacol of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and represent optionally substituted aliphatic, cycloaliphatic, araliphatic or an aromatic hydrocarbon radical by reducing a ketone of the formula ##STR2## wherein R.sup.1 and R.sup.2 have the abovementioned meanings with a base metal, the improvement comprising carrying out the reduction in the presence of an organic halogen compound and in the presence of a phosphoric acid amide, phosphoric acid ester and/or carboxylic acid amide.
Type:
Grant
Filed:
April 3, 1978
Date of Patent:
August 7, 1979
Assignee:
Bayer Aktiengesellschaft
Inventors:
Heinrich Wolfers, Hans Rudolph, Hans-Jurgen Rosenkranz
Abstract: Process for the preparation of alkyl aryl ethers by reacting aromatic hydroxy compounds with aliphatic alcohols in the presence of strongly acidic cation exchangers based on synthetic resins using the aromatic hydroxy compound in excess of the aliphatic alcohol.
Type:
Grant
Filed:
November 18, 1977
Date of Patent:
May 8, 1979
Assignee:
Haarmann & Reimer GmbH
Inventors:
Rainer Neumann, Hans-Helmut Schwarz, Karl-Heinz Arnold
Abstract: New compounds are disclosed which have a juvenile hormone action on insects and also exhibit acaricide action. More particularly, said new compounds are unsaturated aliphatic compounds having a trichloromethyl end group and the other end group of which is a phenol group which may be substituted and/or condensed, and which are capable of hindering the growth of insects from the larval to the adult stage and also exhibit an acaricide action on both adult acari and their eggs.Processes for the production of the new compounds of the invention are also disclosed.
Abstract: Aromatic alkenyl compounds, for example, eugenol and safrole, are isomerized, for example to isoeugenol and isosafrole, by contact with a ruthenium or osmium catalyst.
Abstract: There are disclosed ethers and thioethers having a benzyl or phenyl terminal group and another terminal group which is halogenated, and which ethers and thioethers exhibit juvenile hormone activity (i.e., function as inhibitors of the development of insects from their larval state to the adult state), as well as acaricide activity.Methods for preparing the ethers and thioethers are also disclosed.
Type:
Grant
Filed:
April 14, 1977
Date of Patent:
November 21, 1978
Assignee:
Montedison S.p.A.
Inventors:
Paolo Piccardi, Pietro Massardo, Angelo Longoni
Abstract: 3-Fluorosalicylaldehyde may be prepared in a more economical manner by alkylating o-fluorophenol with an allyl halide such as allyl chloride, thereafter rearranging the resultant o-fluorophenyl allyl ether to form allyl-o-fluorophenol. The latter compound is then isomerized to form propenyl-o-fluorophenol. Thereafter this compound is subjected to ozonolysis at a subambient temperature to form the desired compound, namely, 3-fluorosalicylaldehyde.