摘要:
The sequential reaction of m-diisopropenylbenzene, an alkyllithium and butadiene or isoprene in the presence of 0.01 to 1.0 mole of a tertiary amine per mole of mdiisopropenylbenzene/alkyllithium adduct in a hydrocarbon solvent yields stable solutions of anionic polymerization initiators suitable for the polymerization of dienes.
摘要:
A process is provided for producing amines from paraffin feedstocks containing sulfur impurities deleterious to nitration and hydrogenation of the paraffin to amines by nitrating a paraffin charge substantially free of sulfur compounds to produce a mixture containing paraffin, nitroparaffin and by-products, hydrogenating the nitroparaffin in the mixture to an amine, recovering the amine from the paraffin and by-products, introducing and hydrogenating a paraffin feedstock containing substantial amounts of sulfur compounds, hydrogenating the mixture of paraffin and by-products, and recycling the hydrogenated feedstock and hydrogenated mixture as paraffin charge to the nitration step.
摘要:
The present invention concerns a novel process for the production of 1,2-dichloro-3-amino-propane derivatives of the formula,
WHEREIN R1 and R2 are each alkyl or, together with the nitrogen atom to which they are bound, form a heterocyclic ring, WHICH DERIVATIVES ARE USEFUL AS INTERMEDIATES IN THE PRODUCTION OF INTER ALIA USEFUL INSECTICIDES.
摘要:
LONG CHAIN AMINES ARE PRODUCED IN A CONTINUOUS PROCESS AT ATMOSPHERIC PRESSURES BY REACTING LONG CHAIN C6 TO C26 MONOCHLORINATED OR MONOBROMINATED HYDROCARBONS WITH A STOICHIOMETRIC EXCESS OF LOWER MOLECULAR WEIGHT ALKYL, ALKYLENE OR ALKANOL AMINES BY ADDING REACTANTS SO AS TO CONTINUOUSLY MAINTAIN SAID STOICHIOMETRIC EXCESS OF AMINE AND CONTINUOUSLY WITHDRAWING FROM THE LIQUID REACTION MIXTURE LONG CHAIN AMINE PRODUCT AND UNREACTED INGREDIENTS AND SEPARATING SAID PRODUCT THEREFROM.
摘要:
A tertiary amine is effectively prepared by reacting a primary or secondary amine with formaldehyde in the presence of a palladium or platinum catalyst at a hydrogen pressure of 3 to 50 kg/cm2 (gauge pressure) at a temperature of 80.degree. to 180.degree. C., by controlling the addition of formaldehyde to the starting amine.
摘要翻译:在钯或铂催化剂的存在下,在氢压为3〜50kg / cm 2(表压)下,在80〜180℃的温度下,使伯胺或仲胺与甲醛反应,可有效制备叔胺。 ,通过控制向起始胺中加入甲醛。
摘要:
Nitroaryl carbonyl Formula (IIA) compounds, their nitrodihydroaryl carbonyl Formula (I) intermediates, processes for preparing Formula (II) compounds, and a process for preparing Formula (I) compounds, wherein each process comprises the reaction of a nitroaryl compound with a silane.
摘要:
In the transalkylation of tertiary amines, unexpected higher yields are achieved requiring substantially less catalyst and much shorter reaction times at lower reaction temperatures using a homogeneous catalyst in the presence of an alcohol solvent and carbon monoxide. The process may be exemplified by reacting triethylamine and tripropylamine in the presence of a homogeneous triosmiumdodecacarbonyl catalyst, ethanol, and carbon monoxide to prepare diethylpropylamine and ethyldipropylamine.