PROCESS FOR THE PREPARATION OF 3,3- OR 2,3-DIMETHYL BUTENE AND 2,3- DIMETHYL BUTADIENE OR FOR THE SIMULTANEOUS PREPARATION OF THESE OLEFINS AND GLYCOL OR POLYGLYCOL-N-ALKYL-3,3- OR 2,3-DIMETHYL BUTYL ETHER FROM MONO- AND DICHLORO-DIMETHYL BUTANE

摘要

For the production of 3,3- and 2,3-dimethylbutene, respectively, and 2,3-dimethylbutadiene and/or for the simultaneous production of 3,3- and 2,3-dimethylbutene, respectively, 2,3-dimethylbutadiene, and glycol or polyglycol n-alkyl-3,3- and -2,3-dimethylbutyl ether, respectively, alkali hydroxides are reacted in a two-phase liquid system in the presence of a glycol or polyglycol ether, respectively, at temperatures of 100 DEG -250 DEG C., with mono- and dichlorodimethylbutane, respectively. By using, as the glycol or polyglycol ether, a glycol or polyglycol monoalkyl ether, the glycol or polyglycol n-alkyl-3,3- and -2,3-dimethylbutyl ether, respectively, is obtained besides the olefin.