摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.