摘要:
ACRYLATES, ACRYLONITRILE, ACRYLAMIDES OR VINYL KETONES ARE READILY REACTED, EVEN AT AMBIENT TEMPERATURE, WITH AN ALDEHYDE IN THE PRESENCE OF AN ORGANIC TERTIARY AMINE CATALYST TO PRODUCE THE CORRESPONDING 2-(1-HYDROXYALKYL)ACRYLATES, ACRYLONITRILES, ACRYLAMIDES OR VINYL KETONES IN VERY GOOD YIELDS. THESE PRODUCT MONOMERS HAVING AN -OH MOIETY IN THEIR STRUCTURE EXHIBIT, UPON POLYMERIZATION, GOOD ADHESIVE PROPERTIES.
摘要:
THE PRESENT DISCLOSURE CONCERNS THE USE OF ZN-EXCHANGED, MG-EXCHANGED, ZN AND CO-EXCHANGED, MG AND CO-EXCHANGED AND MG, ZN AND CO-EXCHANGED CRYSTALLINE ZEOLITE MOLECULAR SIEVES WITH EFFECTIVE PORE OPENINGS OF 4 TO 15 ANGSTROM UNITS ("ZEOLITE A," "ZEOLITE X" AND "ZEOLITE Y" EXCHANGED SIEVES) TO DIMERIZE C2 TO C20 SATURATED, ALIPHATIC ALDEHYDS AND C3 TO C20 SATURATED, ALIPHATIC KETONES. THESE MATERIALS ARE KNOWN COMPOUNDS WHICH, UPON HYDROGENATION TO YIELD 1,3-GLYCOLS, ARE USEFUL AS INSECT REPELLENTS AND SYNTHETIC LUBRICANTS INTERMEDIATES, PLASTICIZERS, ETC.
摘要:
Preparation of quinoxaline-di-N-oxides through a condensation of o-quinonedioxime and a butene-1,4-dione in a reaction-inert solvent at 20*-150* C.
摘要:
A compound represented by the general formula WHEREIN X and Y each represent an electron attracting group and Z represents a hydrogen atom, a mono-valent hydrocarbon radical, a di-valent hydrocarbon radical bonded to X or Y, or an alkadienyl radical represented by the formula -CH2-CH=CHCH2CH2CH2CH=CH2 or alkyl-substituted derivatives thereof, and a process for preparing said compounds by adding a 1,3-diene to an active methylene compound or hydrocarbon-substituted methylene compound having the electron attracting groups X and Y as represented by the general formula X - CH(Z) - Y, wherein X, Y and Z have the same meaning as above, using a palladium compound or a platinum compound as catalyst.
摘要:
Processes and intemediates for novel ketones useful in perfumery on account of their desirable olfactory properties which ketones have the formula: