1,3-dichloro-3-methylbutane

Conditions: temp:125.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 3.9 g (20 millimoles) of 3-methoxy-5-isobutoxy-phenol, 2.8 g (20 millimoles) of 1,3-dichloro-3-methyl-butane and 0.26 g (1 millimole) of bis-(acetyl-acetonato)-nickel is heated at 125° C. for 8 hours. The mixture is cooled, the solvent removed, the residue taken up in 40 ml of anhydrous benzene and 0.8 g (3.5 millimoles) of DDQ (dichloro-dicyano-benzoquinone) are added. The mixture is heated to boiling for 60 hours. The solution is filtered, the filtrate evaporated and the residue purified as described in Example 3. Thus 3.6 of the desired compound are obtained in the form of a colorless oil, yield 69%. The mixture is cooled the solvent removed The mixture is heated The solution is filtered the filtrate evaporated the residue purified

Conditions: temp:125.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 3.9 g (20 millimoles) of 3-methoxy-5-isobutoxy-phenol, 2.8 g (20 millimoles) of 1,3-dichloro-3-methyl-butane and 0.26 g (1 millimole) of bis-(acetyl-acetonato)-nickel is heated at 125° C. for 8 hours. The mixture is cooled, the solvent removed, the residue taken up in 40 ml of anhydrous benzene and 0.8 g (3.5 millimoles) of DDQ (dichloro-dicyano-benzoquinone) are added. The mixture is heated to boiling for 60 hours. The solution is filtered, the filtrate evaporated and the residue purified as described in Example 3. Thus 3.6 of the desired compound are obtained in the form of a colorless oil, yield 69%. The mixture is cooled the solvent removed The mixture is heated The solution is filtered the filtrate evaporated the residue purified

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1,3-Dichloro-3-methyl-butane was reacted with 1,1-dichloroethene in the presence of aluminum chloride in the temperature range between -10° and +5° C. 3,3-Dimethyl-1,1,5-trichloro-1-pentene was thereby obtained and was purified by distillation. 1,1-Dichloro-3,3-dimethyl-1,4-pentadiene was obtained by splitting off hydrogen chloride with quinoline in the temperature range between 200° and 240° C. (See Application Ser. No. 281,614 filed July 9, 1981 now pending, corresponding to German Patent Application No. P 30 29 270.7 of 1.8.1980). ##STR6## range between -10° and +5° C

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 20 g of aluminum chloride are dissolved in 2,300 g of 1,1-dichloroethene, while stirring and cooling to -10° C. Thereupon, 1,286 g of 1,3-dichloro-3-methylbutane are added dropwise in the course of 3 hours, and simultaneously, at intervals of 15 minutes, further 3 g portions of aluminum chloride are added in measured amounts to the mixture, a reaction temperature of between 0° and +5° C. being maintained by cooling. After the end of the reaction, 60 ml of acetic acid are added dropwise to the reaction mixture. Thereafter, the product mixture is filtered over sodium sulphate, and is then metered into a distillation apparatus, the trough temperature being kept at 120° C., and a pressure of 1 mbar being maintained; the distillate is cooled and condensed by means of a dry ice/acetone mixture. The crude distillate is then fractionally distilled in vacuo in a Vigreux column. 1,650 g of 3,3-dimethyl-1,1,5-trichloro-1-pentene of boiling point 59° to 63° C./0.1 mm Hg are obtained. 1,1-Dichloro-3,3-dimethyl-1,4-pentadiene a reaction temperature of between 0° and +5° C. being maintained by cooling are added dropwise to the reaction mixture Thereafter, the product mixture is filtered over sodium sulphate being kept at 120° C. a pressure of 1 mbar being maintained the distillate is cooled condensed by means of a dry ice/acetone mixture The crude distillate is then fractionally distilled in vacuo in a Vigreux column

Conditions: temp:125.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 3.9 g (20 millimoles) of 3-methoxy-5-isobutoxy-phenol, 2.8 g (20 millimoles) of 1,3-dichloro-3-methyl-butane and 0.26 g (1 millimole) of bis-(acetyl-acetonato)-nickel is heated at 125° C. for 8 hours. The mixture is cooled, the solvent removed, the residue taken up in 40 ml of anhydrous benzene and 0.8 g (3.5 millimoles) of DDQ (dichloro-dicyano-benzoquinone) are added. The mixture is heated to boiling for 60 hours. The solution is filtered, the filtrate evaporated and the residue purified as described in Example 3. Thus 3.6 of the desired compound are obtained in the form of a colorless oil, yield 69%. The mixture is cooled the solvent removed The mixture is heated The solution is filtered the filtrate evaporated the residue purified

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1,3-Dichloro-3-methyl-butane was reacted with 1,1-dichloroethene in the presence of aluminum chloride in the temperature range between -10° and +5° C. 3,3-Dimethyl-1,1,5-trichloro-1-pentene was thereby obtained and was purified by distillation. 1,1-Dichloro-3,3-dimethyl-1,4-pentadiene was obtained by splitting off hydrogen chloride with quinoline in the temperature range between 200° and 240° C. (See Application Ser. No. 281,614 filed July 9, 1981 now pending, corresponding to German Patent Application No. P 30 29 270.7 of 1.8.1980). ##STR6## range between -10° and +5° C