摘要:
Cyclohexene derivatives of the formula I ##STR1## where R.sup.1 and R.sup.2 are hydrogen or tert.-butyl and N and X are members of a heterocyclic ring in which X is an alkylene chain of four, five or six members, one of which may be a hetero-atom, such as oxygen, and where the alkylene radicals are unsubstituted or substituted by alkyl or by --CH.sub.2 OH or its acetyl or propionyl derivative, and their salts are used in fungicides.
摘要:
Amino compounds of the formula ##STR1## where R.sup.1 is alkyl, A is alkylene or alkenylene, and Ar is aryl, and their acid addition salts, and fungicides containing these compounds.
摘要:
S-Configurated phenylpropane derivatives of the formula ##STR1## where R.sup.1 is alkyl, aryl or alkoxy, R.sup.2 is hydrogen, alkyl, aryl or alkoxy, and R.sup.3 is carboxyl or esterified carboxyl, acetalized formyl, hydroxymethyl or esterified hydroxymethyl, their preparation by microbiological hydrogenation, and their use for the preparation of fungicidal compounds.
摘要:
A process for resolving racemic .alpha.-hydroxy-.beta.,.beta.-dimethyl-.gamma.-butyrolactone, referred to as D,L-pantolactone, into its optical antipodes, based on the separation of diastereomeric salts of D,L-pantoic acid (.alpha.,.gamma.-dihydroxy-.beta.,.beta.-dimethylbutyric acid), produced from D,L-pantolactone, by means of (-)-3-aminomethylpinane, (+)-3-aminomethylpinane or one of their acid addition salts, as a new resolving agent.
摘要:
The production of 3-methylpentane-1,5-diol by hydroformylation of 2-methylbut-1-en-4-ol with carbon monoxide and hydrogen at elevated temperature and superatmospheric pressure in the presence of a rhodium carbonyl complex which has been modified by a tertiary organic phosphine followed by hydrogenation of the 2-hydroxy-4-methyltetrahydropyran at elevated temperature and superatmospheric pressure in the presence of a hydrogenation catalyst.
摘要:
Cyclohexanedione derivatives of the general formula ##STR1## where R.sup.1 is alkyl, R.sup.2 is alkyl, alkenyl, alkynyl or haloalkenyl, X is alkylene, n is 0 or 1, Y is a heterocyclic radical and Z is hydrogen or methoxycarbonyl, and salts of these compounds are used in herbicides.
摘要:
Pinanes substituted by a group X in the 3-position which group is formyl, or its alkyl-acetals or alkyl-hemiacetals, carboxylic acid, carboxylic acid chloride, carboxylic acid amide, hydroxymethyl or aminomethyl substituted in a specific manner at the nitrogen, the optical isomers of these compounds and a process for their manufacture by hydroformylation of .alpha.-pinene in the presence of rhodium catalysts, and conversion of the 3-formylpinane first produced into the above derivatives by conventional methods.
摘要:
Tripinyltrioxanes of the general formula (I): ##STR1## in which the radicals Pin are either dextrorotatory (+) or laevorotatory (-) pinyl radicals; a process for the production of (I) by treatment of an enantiomeric mixture of (+)-3-formylpinane and (-)-3-formylpinane (II) with an acid in an organic solvent and fractional precipitation of the trimeric compound (I); and redissociation of (I) into the pure enantiomers (II) with a catalytic amount of an acid.
摘要:
Substituted phenylpropanals and a process for their manufacture by reaction of the corresponding phenylethenes with carbon monoxide and hydrogen at temperatures of from 50.degree. to 180.degree. C and pressures of from 20 to 1,500 atmospheres gauge, in the presence of rhodium carbonyl complexes. The phenylpropanals according to the invention have pleasant scents. 3-(4-Isopropyl-phenyl)-butanal-1 and 3-(4-tert.-butyl-phenyl)-butanal-1, in particular, have suitable scents for the preparation of flower oil. They are also valuable starting materials for synthesizing drugs, plant protection agents and dyes.
摘要:
Benzaldehyde dialkyl acetals of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each alkyl, are prepared by electrochemical oxidation of an alkyltoluene of the formula ##STR2## by a process in which the electrolyte used contains from 60 to 90% by weight of an alkanol of the formula R.sup.2 OH, from 8.5 to 40% by weight of the alkyltoluene and from 0.01 to 1.5% by weight of an HO.sub.3 S-containing acid.