摘要:
The present invention relates to a method for the enzymatic hydroamination of C—C double bonds catalyzed by enzymes structurally and/or functionally related to phenylalanine ammonia lyase (PAL) isolated from microorganisms of Petroselinum crispum, Rhodoturula glutinis and/or functional active derivatives thereof.
摘要:
The present invention relates to a process for the biocatalytic, enantioselective production of a β-amino acid pre-cursor from an optionally substituted dihydrouracil using a hydantoinase and/or a dihydropyrimidinase, a process for producing a β-amino acid from said precursor, a hydantoinase and its use in said process for the biocatalytic production of a β-amino acid pre-cursor or a β-amino acid, and a method for obtaining said hydantoinase.
摘要:
The present invention relates to a process for the biocatalytic, enantioselective production of a β-amino acid precursor from an optionally substituted dihydrouracil using a hydantoinase and/or a dihydropyrimidinase, a process for producing a β-amino acid from said precursor, a hydantoinase and its use in said process for the biocatalytic production of a β-amino acid precursor or a β-amino acid, and a method for obtaining said hydantoinase.
摘要:
A method for preparing optically active methyl 4-(1-ammoniumethyl)benzoate sulfate by reacting racemic methyl 4-(1-aminoethyl)benzoate with an acylating agent in the presence of a lipase to give methyl 4-(1-aminoethyl)benzoate and subsequently precipitating methyl 4-(1-ammoniumethyl)benzoate sulfate by adding sulfuric acid.
摘要:
The invention relates to a method for the enantioselective N-acylation of aminoalkylphenols, and to a method for producing enantiomer-pure compounds of formulae (I-S) and/or (I-R).
摘要:
7-(R)-Aminotriazolopyrimidines of the formula I where the substituents and the index are as defined below: R1 is hydrogen or methyl; R2 is methyl; R3 is C2-C1o-alkyl, C1-C4-alkoxymethyl, C3-C1o-cycloalkyl; R4 is halogen, Cl-C4-alkyl, C1-C4-haloalkyl or Cl-C4-alkoxy; n is a number from 1 to 5; Y is halogen, cyano, Cl-C4-alkyl or Cl-C4-alkoxy; where * is a center of chirality in the R configuration, processes for preparing these compounds, compositions comprising them and their use for controlling harmful fungi are described.
摘要:
A process for preparing optically active amines, a process for preparing racemic amines which can be resolved using optically active carboxylic acids or enzymes, and racemic and optically active amines and optically active amides are described.
摘要:
Aromatic vinyl compounds of the formula IAr--CH.dbd.CHR Iwhere Ar is an aromatic radical, and R is hydrogen, C.sub.1 -C.sub.4 -alkyl or unsubstituted or substituted phenyl, are prepared by reacting an alcohol of the formula IIAr--CH.sub.2 OH IIor an ester of the formula III ##STR1## where R' is hydrogen or C.sub.1 -C.sub.4 -alkyl, in aqueous solution with a triarylphosphine and a strong acid and then, in the presence of a mineral base, with an aldehyde of the formula IVR--CHO IV.
摘要翻译:芳族乙烯基化合物式Ar-CH = CHR I其中Ar是芳基,R是氢,C 1 -C 4烷基或未取代或取代的苯基,是通过使式II Ar-CH 2 OH II 或其中R'是氢或C 1 -C 4 - 烷基的式III'III的酯,在与三芳基膦和强酸的水溶液中,然后在无机碱的存在下,与式 IV R-CHO IV。
摘要:
Naphthindazole-4,9-quinones of the formula ##STR1## where R.sup.1 to R.sup.5 have the meanings given in the disclosure, and their use for combating unwanted plant growth.