A perfumery composition consisting essentially of from 1% to 50% by weight of an alkyl-substituted 1,4-dioxane of the formula ##STR1## wherein R.sub.1 is alkyl having from 4 to 12 carbon atoms, R.sub.2 is hydrogen, R.sub.1 and R.sub.2, when taken together, represent a bivalent radical selected from the group consisting of alkylene having from 3 to 12 carbon atoms and alkylalkylene having from 1 to 4 carbon atoms in the alkyl and from 3 to 12 carbon atoms in the alkylene, R.sub.3 and R.sub.4 are individually members selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms, and the remainder customary constituents of perfumery compositions, as well as novel 1,4-dioxanes of the above formula where either R.sub.3 or R.sub.4 or both are alkyl, or where R.sub.1 and R.sub.2, taken together, are a bivalent radical.
This invention is directed to 13,15-dioxabicyclo[10.5.0]heptadecanes having the structural formula ##STR1## wherein R and R.sup.1 are independently hydrogen or a methyl radical. The invention is also directed to their preparation, their use as perfuming agents and as olefactant components in perfume compositions and as an odorant agent for technical products.
This invention relates to the production of anhydrous 1,4-dioxane by the dimerization of ethylene oxide in the presence of an acidic type of cation exchanger, preferably an acidic cation exchanger resin having sulfonic acid groups associated therewith. The 1,4-dioxane is formed by contacting ethylene oxide in the liquid phase with an acidic-type cation exchanger at a first temperature and for a time sufficient to yield a reaction product of the ethylene oxide and the cation exchanger, and thereafter heating the reaction product at a second temperature higher than the first temperature and for a time period sufficient to dissociate the reaction product and thereby yield 1,4-dioxane.
