Methods for producing cycloheptatriene
This invention relates to methods for producing cycloheptatriene from at least 7,7-dichloronorcarane and a liquid component comprising a C 8 to C 30 succinic anhydride, a carboxylic acid, or a C 8 to C 30 alkyldimethylamine at about 205 deg. C. to about 230 deg. C.
1. A method for producing cycloheptatriene comprising:
(a) combining at least 7,7-dichloronorcarane and a liquid component in a container to form a reaction combination, wherein the container has a gas inlet and a gas vent, and the liquid component comprises a C 8 to C 30 succinic anhydride, a carboxylic acid, or a C 8 to C 30 alkyldimethylamine;
(b) while passing gaseous nitrogen through the reaction combination in the container via the gas inlet and the gas vent at a rate up to about 100 mL/min, heating the reaction combination to, and maintaining the reaction combination at, about 205 deg. C. to about 230 deg. C.;
(c) collecting distillate from the container; and
(d) obtaining cycloheptatriene from the distillate.
2. The method of claim 1 wherein the liquid component comprises a C 8 to C 30 alkenyl succinic anhydride.
3. The method of claim 1 wherein the liquid component comprises a C 18 alkenyl succinic anhydride.
4. The method of claim 1 wherein the liquid component comprises a carboxylic acid.
5. The method of claim 1 wherein the liquid component comprises a C 16 alkyldimethylamine.
6. The method of claim 1 wherein in (b) HCl is produced in the reaction combination and substantially all of the produced HCl is vented via the gas vent.
7. The method of claim 1 wherein the distillate comprises less than about 1 vol % up to about 50 vol % 7,7-dichloronorcarane.