Scale-up and synthesis of 1-methoxycyclohepta-1 3, 5-triene

Details Scale-up and synthesis of 1-methoxycyclohepta-1 3, 5-triene Scale-up and synthesis of 1-methoxycyclohepta-1 3, 5-triene

C - Chemistry, Metallurgy

07

C

260/646.1

C07C 43/188 (2006.01)

Patent

CA 1307797

ABSTRACT OF THE DISCLOSURE A method for preparation of 1-methoxycyclohepta- 1,3,5-triene in commercial quantities, which comprises the steps of heating 7,7-dichloro-1-methoxybicyclo[4.1.0]heptane in a refluxing reaction solvent comprising a lower boiling aromatic amine, at reflux, until suitable amounts of 1-methoxycyclohepta- 1,3,5-triene have been produced, and recovering the 1-methoxycyclohepta-1,3,5-triene. Suitable reaction solvents include 2-picoline, pyridine and 2,6-lutidine. The method according to the present invention results in safer temperature control in the production of 1-methoxycyclohepta-1,3,5-triene, and increased yields.

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