title: 9-Eth-oxy-1,5,13-trimethyl-8,10-dioxa-tetra-cyclo-[7.7.1.0.0]hepta-deca-2,4,6,11,13,15-hexa-ene.
abstract: The reaction of ethyl acetoacetate with meta-cresol in an acidic ionic liquid yielded a complex mixture of condensation products. 4,7-Dimethyl-coumarin and the title compound, C(20)H(22)O(3), were isolated. The title compound shows chemical but not crystallographic mirror symmetry. The two aromatic rings are inclined at an angle of 73.55 (6)°.
authors.forename: Ewa Maria
authors.initials: EM
authors.lastname: Nowakowska-Bogdan
authors.forename: Ewa
authors.initials: E
authors.lastname: Wicher
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Ejsmont
authors.forename: Jacek
authors.initials: J
authors.lastname: Zaleski