Inventor

NETSCHER THOMAS

DE39 patents

⚠️ This page may combine multiple inventors who share the name “NETSCHER THOMAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NETSCHER THOMAS

DSM IP ASSETS BV

Process for the manufacture of α-tocopheryl acetate

6-chromanol derivatives and their synthesis

Synthesis of intermediates for the preparation of alpha-tocopherol

Catalytic synthesis of vitamin A intermediate

Method for producing specific α, β-unsaturated aldehydes

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

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

Process of asymmetric hydrogenation of ketals and acetals

Manufacture of tocopheryl acetate

Use of substituted chroman-6-ols with extended lipophilic side chains

Process for the production of 4-alkanoyloxy-2-methylbutanoic acid

Photooxidation of 2,4,6-trimethylphenol

Manufacture of α-tocopherol

Manufacture of α-tocopherol

Formation of chiral 4-chromanones using chiral pyrrolidines in the presence of acids

Process of production of 2,5-dimethylphenol

Formation of chromanes based on intermolecular reaction of alkynes with dimethylfuran in the presence of gold(I) complexes

Formation of chiral 4-chromanones using chiral pyrrolidines in the presence of phenols or thiophenols

(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 combining asymmetric hydrogenation and isomerization

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

(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

Formation of chiral 4-chromanones using chiral pyrrolidines in the presence of ureas or thioureas

Process for the preparation of ubihydroquinones and ubiquinones

Process for preparing chiral quinone

Route to α- tocopheryl alkanoates and percursors thereof

BONRATH WERNER

Process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene

Process for the manufacture of chroman derivatives, especially α-tocopherol and alka-noates thereof

Intermediates for the vitamin A and β-carotene synthesis

Acid chloride

Process for the manufacture of TMHQ

Isomerization of β-keto-allenes

Asymmetric hydrogenation of alkenes using chiral iridium complexes

ROCHE VITAMINS INC

Process for making vitamin E using hydrogen-tris(oxalato) phosphate

Tocopherol manufacture by tris(perfluorohydrocarbylsulphonyl) methane or metal methides thereof

Process for the manufacture of a vitamin E intermediate

Hydroxymethylation of tocopherols

DSM IP ASSETS B V A NETHERLAND

Process for the manufacture of alkenylated hydroxylated aromatic compounds, of chroman compounds and of their acylated derivatives

SCHIEFER GERHARD

Process of separating chiral isomers of chroman compounds and their derivatives and precursors