Werner Bonrath

ß-CAROTENE SYNTHESIS (II)

PROCESS FOR THE PREPARATION OF ALKOXYLATED 2,5-DIHYDROFURAN

PROCESS FOR ETHYNYLATING SPECIFIC ALPHA, BETA-UNSATURATED KETONES

PROCESS FOR PRODUCTION OF VITAMIN A

ORGANIC TERTIARY OR QUATERNARY AMMONIUM SALTS AS CATALYSTS IN THE FORMATION OF GAMMA, DELTA-UNSATURATED KETONES

RING CLOSURE OF BENZOQUINONES CONTAINING AN UNSATURATED SIDE CHAIN USING A BASE IN TWO-PHASE SYSTEM

RING CLOSURE OF BENZOQUINONES CONTAINING AN UNSATURATED SIDE CHAIN USING A BASIC CATALYST

COUPLING OF 2,3,5-TRIMETHYLHYDROQUINONE AND UNSATURATED ALCOHOLS

MANUFACTURING OF ALLENE KETONES USING AN AMMONIUM (THIO)SULFATES OR HYDROGEN (THIO)SULFATES

MANUFACTURING OF ALLENE KETONES USING AN AMMONIUM (THIO)SULFATES OR HYDROGEN (THIO)SULFATES

PROCESS FOR PRODUCTION OF INTERMEDIATES

NEW BUTYRATE COMPOUNDS

PHOTOOXIDATION OF 2,4,6-TRIMETHYLPHENOL

NEW SYNTHESIS OF L-PHENYLALANINE ESTER

NEW SYNTHESIS OF L-PHENYLALANINE BUTYRAMIDE

NEW SYNTHESIS OF L-PHENYLALANINE AMIDE

FORMATION OF P-ALKYLPHENOLS BASED ON INTERMOLECULAR REACTION OF ETHYNE WITH 2-ALKYLFURANS IN THE PRESENCE OF GOLD(I) COMPLEXES

IMPROVED PROCESS TO PRODUCE SPECIFIC ALPHA,BETA-UNSATURATED CARBOXYLATES

PROCESS FOR PRODUCTION OF INTERMEDIATES

Vitamin K2 synthesis

SUSTAINABLE PROCESS FOR THE MANUFACTURE OF 1,1,4,4-TETRAMETHOXY-2-BUTENE

PROCESS FOR PRODUCTION OF NEW SULFOLENIC INTERMEDIATES

PROCESS FOR PRODUCTION OF VITAMIN A

FUNCTIONALISATION OF 1,3-ALPHA-DIENES (I)

Dehydrogenation process

FUNCTIONALISATION OF 1,3-ALPHA-DIENES (II)

NEW TRANSITION METAL CATALYST

SELECTIVE HYDROGENATION OF ALKYNOLS TO ALKENOLS IN THE PRESENCE OF A PHOSPHORUS COMPOUND

NOVEL ENOL-ACETATES(II)

Process for the production of retinal

Process for the preparation of intermediates for the synthesis of vitamin A derivatives from polyenes by cyclisation

NOVEL ENOL-ACETATES

Specific dehydrogenation process (I)

Intermediates for the vitamin A synthesis

IMPROVED SYNTHESIS OF AN EXPOXIDATION-CATALYST

ETHYNYLATION OF POLYUNSATURATED ALDEHYDES AND KETONES

CATALYTIC ETHYNYLATION

Regioselective hydroxylation of isophorone

PROCESS FOR THE PREPARATION OF A SUBSTITUTED IMIDAZOTHIAZOLONE COMPOUND

PROCESS FOR THE PRODUCTION OF SPRINGENE

NEW INTERMEDIATES FOR THE VITAMIN A SYNTHESIS

Process for the production of beta-springene

6-chromanol derivatives and their synthesis

Metal powderdous catalyst for hydrogenation processes

Metal powderdous catalyst for hydrogenation processes

Device for processing and conditioning of material transported through the device

Process for the manufacture of 2,6-dimethyl-5-hepten-1-al

Selective reduction of aldehydes and ketones

Selective reduction of esters to alcohols

Production of farnesol

PROCESS FOR THE PREPARATION OF A SUBSTITUTED IMIDAZOTHIAZOLONE COMPOUND

Method for producing specific α,β-unsaturated aldehydes by rearrangement process

Process of production of 7,8-dihydro-C15-aldehyde

Method for producing specific α, β-unsaturated aldehydes

ETHYNYLATION OF POLYUNSATURATED ALDEHYDES AND KETONES

Process of production of 1-(5,5-dimethylcyclohex-1-en-1-yl)ethanone and 1-(5,5-dimethylcyclohex-6-en-1-yl )ethanone

Process of production of 2,5-dimethylphenol

Using mixtures of E/Z isomers to obtain quantitatively specific products by combining asymmetric hydrogenation and isomerization

Process of asymmetric hydrogenation of ketals and acetals

(6R,10R)-6,10,14-trimetylpentadecan-2-one prepared from 6,10-dimetylundec-5-en-2-one or 6,10-dimetylundeca-5,9-dien-2-one

(6R,10R)-6,10,14-trimetylpentadecan-2-one prepared from 6,10,14 trimetylpentadeca-5,9,13-trien-2-one or 6,10,14-trimetylpentadeca-5,9-dien-2-one

Using mixtures of E/Z isomers to obtain quantitatively specific products by combined asymmetric hydrogenations

Catalytic synthesis of vitamin A intermediate

Preparation of 4-acetoxy-2-methylbutanal by catalytic carbon carbon double bond hydrogenation

Process for the manufacture of TMHQ