PROCESS FOR THE PREPARATION OF UNSATURATED CARBOXYLIC ACIDS BY CARBONYLATION OF ALLYL ALCOHOLS AND THEIR ACYLATION PRODUCTS
申请人:BASF SE
公开号:US20200055834A1
公开(公告)日:2020-02-20
The present invention relates to a process for carbonylating allyl alcohols at low temperature, low pressure and/or low catalyst loading. In an alternative embodiment, an acylation product of the allyl alcohol is used for the carbonylation. The present invention likewise relates to the preparation of conversion products of these carbonylation products and specifically of (−)-ambrox.
MALONATE DECARBOXYLASES FOR INDUSTRIAL APPLICATIONS
申请人:Hauer Bernhard
公开号:US20100311037A1
公开(公告)日:2010-12-09
The present invention relates to a method for the enzymatic decarboxylation of malonic acid (propanedioic acid) derivatives catalyzed by enzymes structurally and/or functionally related to arylmalonate decarboxylase (AMDase) as isolated from microorganisms of the genus
Bordetella
. The present invention also relates to novel enzymes with a decarboxylase activity, useful for performing the claimed method, mutants thereof, corresponding coding sequences and expression systems, methods of preparing said novel enzymes, and screening methods for obtaining further suitable enzymes also having said decarboxylase activity.
Nickel‐Catalyzed Kinetic Resolution of Racemic Unactivated Alkenes via Enantio‐, Diastereo‐, and Regioselective Hydroamination
作者:Hyung‐Joon Kang、Changseok Lee、Sungwoo Hong
DOI:10.1002/anie.202305042
日期:2023.6.12
An efficient enantioselective catalysis using a chiral nickel complex has been developed via kinetic resolution of racemic α-substituted unconjugated carbonyl alkenes. This hydroamination protocol produces a wide range of syn-β2,3-amino acid derivatives derivatives and α-alkylated unconjugated carbonyl olefins with high enantiomeric purity.
Peptide mimics of the retrovirus protease polyprotein substrate bind to viral proteases and are useful in assaying for protease activity or inhibiting protease activity and in treating viral disease.
Fermentation process for preparing 10-hydroxy-C18-carboxylic acid and gamma-dodecalactone derivatives
申请人:INTERNATIONAL FLAVORS & FRAGRANCES INC.
公开号:EP0578388A2
公开(公告)日:1994-01-12
Described is a fermentation process for preparing 10-hydroxy-C18-carboxylic acid derivative containing compositions containing compounds defined according to the structure :
and gamma-dodecalactone derivative-containing compositions containing compounds defined according to the structure :
wherein the dashed lines represent the same or different carbon-carbon bonds; with each of the dashed lines representing a carbon-carbon single bond or a carbon-carbon double bond, products produced thereby and organoleptic uses thereof including uses for augmenting, enhancing or imparting aromas or flavors to or in consumable materials including but not limited to perfume compositions, colognes, perfumed articles, foodstuffs, chewing gums, beverages, toothpastes, hair preparations, tobacco compositions and smoking tobacco articles.