178357-23-8

Upstream product

• 824940-92-3 2-(4-isopropylphenyl)-2-((trimethylsilyl)oxy)acetonitrile 
• 151-50-8 potassium cyanide 
• 122-03-2 (4-isopropylbenzaldehyde) 
• 75-86-5 2-hydroxy-2-methylpropanenitrile 
• 74-90-8 hydrogen cyanide 
• 7677-24-9 trimethylsilyl cyanide 

Relevant academic research and scientific papers

Acceptorless and Base-free Dehydrogenation of Cyanohydrin with (η6-Arene)halide(Bidentate Phosphine)ruthenium(II) Complex

Ruthenium-catalyzed dehydrogenation of cyanohydrins under acceptorless and base-free conditions was demonstrated for the first time in the synthesis of acyl cyanide. As opposed to the thermodynamically preferred elimination of hydrogen cyanide, the dehydrogenation of cyanohydrins could be kinetically controlled with ruthenium (II) bidentate phosphine complexes. The effects of the arene, phosphine ligands and counter anions were investigated in regard to catalytic activity and selectivity. Selective dehydrogenation can occur via β-hydride elimination with the experimentally observed [(alkoxide)Ru] complex. (Figure presented.).

Tertiary pentyl groups enhance salen titanium catalyst for highly enantioselective trimethylsilylcyanation of aldehydes

tert-Pentyl groups are recognized to be highly effective steric groups that can enhance enantioselectivity of salen titanium complexes when they are used in asymmetrical cyanation of aromatic aldehydes. High ee (92-97%) has been obtained with several aldehyde substrates. Compared to its tert-butyl analogue, the tert-pentyl group has been found to improve enantioselectivity and in some cases quite dramatically.

(S)-naproxen as a derivatizing agent to determine enantiomeric excess of cyanohydrins by HPLC

An easy, inexpensive and accurate method to determine enantiomeric excess of cyanohydrins is described. The method consists in derivatization of cyanohydrins with (S)-naproxen chloride and the products analyzed by HPLC. The results of enantiomeric excess so determined are similar to those obtained with [Eu(hfc)3], as a chiral shift reagent, and analysis by 1H- NMR of the cyanohydrins.

Novel (R)-oxynitrilase sources for the synthesis of (R)-cyanohydrins in diisopropyl ether

Apple, apricot, cherry and plum meal were prepared from the seeds or kernels of mature garden fruits. The preparations as well as almond meal were used as the source of (R)-oxynitrilase for the synthesis of aliphatic and aromatic cyanohydrins in diisoprop

(R)- and (S)-cyanohydrins using oxynitrilases in whole cells

Almond meal and Sorghum bicolor shoots were used as the sources of oxynitrilases for the preparation of a number (R)- and (S)-arylcyanohydrins, respectively, from the corresponding aldehydes in diisopropyl ether. Two different in situ methods were used to introduce hydrogen cyanide into the reaction mixture. In method 1, acetone cyanohydrin decomposes enzymatically and/or chemically to hydrogen cyanide. In method 2, hydrogen cyanide freely evaporates from a solution in diisopropyl ether from one compartment of the reaction vessel and ends up to the other where it dissolves into the reaction mixture.

Amides for the treatment of atherosclerosis

This invention provides amide compounds as inhibitors of acyl-Coenzyme A: cholesterol O-acyltransferase (ACAT), pharmaceutical compositions containing such compounds, processes for the preparation of such compounds, and the use of such compounds as antihypercholesterolemic and/or antiatherosclerotic agents.

Enzymatic Preparation of Optically Active Cyanohydrin Acetates

A series of cyanohydrin acetates (1)-(47) of widely varying structures, potential chiral building blocks for numerous synthetic applications, has been prepared in good chemical and often high optical yields by enzymatic hydrolysis of their racemic acetates in the presence of an ester hydrolase from Pseudomonas sp.