N-methyl-2-pyrrolidone → [(1-Chloro-3,3,4-trimethylpent-1-en-2-yl)oxy]benzene

Participants

Reaction Conditions

Reaction Steps

487 g of sodium phenolate are introduced into 1.6 liters of N-methylpyrrolidone at about 100° C., and dissolved by heating the mixture to 200° C. 360 g (2 mols) of 1,1-dichloro-3,3,4-trimethyl-pent-1-ene are added dropwise in the course of 3 hours at a rate such that the temperature of the reaction mixture does not fall below 195° C. Thereafter, the mixture is heated at 200°-210° C. for 8 hours. Working-up is carried out by diluting the solution with methylene chloride and extracting it by shaking withh dilute sodium hydroxide solution. After drying and stripping off the solvent, 406 g of crude product remain, this product being distilled at 105°-120° C./0.1 mbar. 337 g (71% of theory) of 1-chloro-2-phenoxy-3,3,4-trimethyl-pent-1-ene are obtained. ##STR18##

Provenance & Evidence