Union Carbide Corporation

W. R. Grace Co.-conn.

Jennifer M Quirk

Bernard Kanner

Arthur P De Monte

Charles G Carter

Robert J Kupper

Christer L Hakansson

Felek Jachimowicz

Steven P Hopper

Stephen G Harsy

Kunj R Mehta

Shiow-Ching Lin

Scot Turner

Linda K Kozak

N-formyl amino acid or peptide is deformylated by reaction with aniline or methylene dianiline over noble metal catalyst, e.g., Pt-on-carbon. N-formanilide is formed as by-product. The process is particularly useful in deformylating N-formyl aspartame.

Deblocking N-formyl aspartame compounds

A process of forming 2-amino-1,3-propanediol by reducing the compound, 5-nitro-1,3-dioxane and subsequently hydrolyzing the reduced compound.

Novel process for the preparation of serinol

A process to form alkyl nitroacetates by reacting, in a common solvent and in the presence of a base, a nitroparaffin and a cyanoformate. The desired product is formed by a simple one-step process using inexpensive and readily available reactants.

Preparation of nitroesters via the reaction of nitroparaffins with

A process for the preparation of nitroolefins which comprises heating a solution of a nitroalcohol of the formula: ##STR1## to at least 125.degree. C. to give a corresponding nitroolefin which is contacted in situ with nucleophilic addition reagent.

Process for the preparation of nitroolefins

A process of forming 2-bromo-2-nitro-1,3-propanediol by contacting a 5-nitro-1,3-dioxane with bromine under alkaline conditions and hydrolyzing the brominated product.

Novel process for the preparation of bronopol

1-Cyanoethylimidazoles are hydrogenated to provide the correspondng 1-aminopropylimidazoles, e.g., an ethanol solution of 1-cyanoethyl-2-ethyl-4-methylimidazole is hydrogenated at 1000 psi using Raney nickel catalyst to prepare 1-aminpropyl-2-ethyl-4-methylimidazole, useful as an intermediate in the preparation of epoxy accelerators.

Aminopropylimidazoles

There is disclosed a process for producing certain epoxyorganoalkoxysilanes through the rhodium catalyzed hydrosilation of ethylenically unsaturated epoxides and alkoxysilanes in the presence of nitrogenous impurities.

Process for producing epoxyorganoalkoxysilanes

Formylating the amino nitrogen of an alkali metal salt of an amino carboxylic acid, by reacting the salt with an alkyl formate in an alkanol solvent. In one embodiment, the alkyl formate is added to the reaction as such; in another embodiment, the alkyl formate is formed in situ by reaction of carbon monoxide with the alkanol solvent in the presence of the alkali metal salt of the amino carboxylic acid. The process provides a new class of compounds, the alkali metal salts of N-formyl-aspartic acids.

N-formylation of amino carboxylates with alkyl formates

Novel O-silylated ketene acetals and enol ethers are prepared via the 1,4-hydrosilation of a hydrosilation composition selected from the group consisting of aminosilanes, siloxanes and alkylalkoxysilanes with an .alpha.,.beta.-unsaturated carbonyl in the presence of a rhodium catalyst.

O-silylated ketene acetals and enol ethers and method of preparation

A novel synthesis for silanes and siloxanes containing olefinic bonds wherein an aminosilane, siloxane alkoxysilane or alkylalkoxysilane and an olefin undergo a dehydrocondensation in the presence of a rhodium or ruthenium catalyst.

Process for the preparation of olefinic silanes and siloxanes

A process for the preparation of halopropyltrialkoxysilanes and halopropylalkylalkoxysilanes comprising the hydrosilation of allyl halides (including substituted allyl halides) with trialkoxysilanes and alkylalkoxy silanes over specific iridium-containing catalysts.

Novel process for the preparation of halopropyltrialkoxysilanes and

A process for preparing vinyl-tri-t-oxysilanes by reacting a tri-t-alkoxysilane with an alkyne in the presence of a platinum hydrosilation catalyst at a reaction temperature greater than 150.degree. C. forms a vinyl-tri-t-alkoxysilane in high yields and of high quality.

Process for preparing vinyl-tri-(tertiary substituted) alkoxysilanes

A process for preparing vinylaminosilanes in which an aminosilane of the formula HSi(NRR').sub.x (R').sub.3-x is reacted with an alkyne of the formula R''C.tbd.CH in which R and R' are each saturated or unsaturated aliphatic hydrocarbon radicals or an aromatic hydrocarbon radical, R' and R'' are the same or different and are each hydrogen or R and x is an integer from 1 to 3, in the presence of a platinum hydrosilation catalyst at reaction temperatures above about 180.degree. C.

Process for preparing vinylaminosilanes

Triacetoxysilanes are prepared by adding a tris(amino)silane to acetic anhydride and maintaining the reaction mix at a temperature no greater than about 50.degree. C.

Process for preparing triacetoxysilanes from tris(amino)silanes

A process for the preparation of aminopropylalkoxysilanes comprising the hydrosilation of allylamines (including N-substituted allylamines) with alkoxyhydrosilanes in the presence of a rhodium-triorganophosphorus-complex catalyst. This process significantly increases the gamma- to beta-isomer ratio of the final product of the addition of allylamines to alkoxyhydrosilanes.

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Highland, MD, United States of America

Jennifer M Quirk