摘要:
A METHOD FOR THE PREPARATION OF MIXED TRICYCLOHEXYLIDENE PEROXIDE AND DICYCLOHEXYLIDENE PEROXIDE OR DICYCLOHEXYLIDENE PEROXIDE ALONE COMPRISING R EACTING A PEROXIDE SELECTED FROM THE GROUP CONSISTING OF 1-HYDROPEROXY 1''-HYDROXYDICYCLOHEXYL PEROXIDE AND 1,1''-DIHYDROPEROXYDICYCLOHEXYL PEROXIDE WITH AN ORGANIC SOLVENT AND A STRONG ACID CATALYST. ANOTHER METHOD IS DISCLOSED FOR THE PREPARATION OF TRICYCLOHEXYLIDENE PEROXIDE AND DICYCLOHEXYLIDENE PEROXIDE OR TRICYCLOHEXYLIDENE ALONE COMPRISING REACTING A PEROXIDE SELECTED FROM THE GROUP CONSISTING OF 1-HYDROPEROXY 1''-HYDROXYDICYCLOHEXYL PEROXIDE AND 1,1''-DIHYDROPEROXYDICYCLOHEXYL PEROXIDE WITH A LIQUID CARBOXYLIC ACID AND STRONG ACID CATALYST. ALSO DISCLOSED ARE NEW AND USEFUL IMPROVEMENTS IN THE METHOD FOR THE PREPARATION OF 1-HYDROPEROXY-1''-HYDROXYDICYCLOHEXYL PEREOXIDE COMPRISING REACTING C YCLOHEXANONE WITH AQUEOUS HYDROGEN PEROXIDE AND A STRONG ACID-CATALYST.
摘要:
Synthesis of cis 2-(1''-methyl-2''-isopropenylcyclobutyl)ethanol, a component of the boll weevil sex attractant, and intermediates therefor, in which 5-hydroxy-pent-2-ynoic acid or ethers thereof is methylated followed by cyclization to yield 3-methylpent-2eno-5-lactone which is irradiated in presence of ethylene to yield 2,3-cycloethylene-3-methylpentano-5-lactone which is cleaved and converted into 2-(1''-methyl-2''isopropenylcyclobutyl)ethanol.
摘要:
Synthesis of cis 2-(1''-methyl-2''-isopropenylcyclobutyl)ethanol, a component of the boll weevil sex attractant, and intermediates therefor, in which 5-hydroxy-pent-2-ynoic acid ester or ethers thereof is methylated followed by cyclization to yield 3methylpent-2-eno-5-lactone which is irradiated in presence of ethylene to yield 2,3-cycloethylene-3-methylpentano-5-lactone which is cleaved and converted into 2-(1''-methyl-2''isopropenylcyclobutyl)ethanol.
摘要:
Lactones may be prepared from alcohols by treating said alcohol with methyl alcohol in the presence of an alkaline substance and an oxidizing agent at an elevated temperature to prepare the desired product. Examples of such lactones are dimethyl, diphenyl, dicyclohexyl and di-p-tolyl-delta-valerolactones. These compounds have utility as solvents and as starting monomers in the preparation of polyester formulations, among other uses.
摘要:
CONJUGATED DILEFINS BEARING A HALOGEN ON AN UNSATURATED CARBON ARE REACTED WITH CARBON MONOXIDE AND WATER IN THE PRESENCE OF A GROUP VIII NOBLE METAL CATALYST TO PREPARE UNSATURATED LACTONES. A SPECIFIC EMBODIMENT COMPRISES THE PREPARATION OF ANGELICA LACTONE FROM 2-HALO BUTADIENE.