Prepd by cyclization of methyl or ethyl sebacate
with sodium metal: Hansley, US2228268 (1941 to du Pont); Prelog et al.,Helv. Chim. Acta35, 1598 (1952); Allinger, Org.
Synth.coll. vol. IV, 840 (1963).
Properties
Prisms from ether + petr ether, mp 42°. bp6 113-114°; bp0.1 77°.