Download citation
Download citation

link to html
The title compound, C25H20O5S, is the product of a Diels–Alder reaction. The mol­ecule consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both show an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The thio­phene ring is disordered over two sets of sites with an occupancy ratio of 0.53 (1):0.47 (1). The dihedral angles between the 4-methyl­phenyl ring and the major and minor components of the thio­phene ring are 66.3 (1) and 67.9 (1)°, respectively, while the dihedral angle between the disordered thio­phenyl components is 3.1 (1)°. The mean plane of the tricyclic ring system makes dihedral angles of 35.8 (1), 30.8 (1) and 32.8 (1)°, respectively, with the 4-methyl­phenyl ring and the major and minor components of the thio­phenyl ring. In the crystal, inversion dimers are formed through pairs of C—H...π inter­actions. In addition, C—H...O inter­actions are observed.

Download citation
Download citation

link to html
The title compound, C30H30O5, is the Diels–Alder adduct from 1,3-diphenyl­benzo[c]furan and diethyl maleate. The mol­ecule comprises a fused tricyclic system containing two five-membered rings, which are in envelope conformations with the O atom at the flap, and a six-membered ring adopting a boat conformation. The dihedral angle between the 4-methyl­phenyl substituents in the 1- and 8-positions is 62.1 (1)°. The ethyl group of one ester group and the eth­oxy group of the other ester group are disordered over two sets of sites, with occupancy ratios of 0.43 (2):0.57 (2) and 0.804 (7):0.196 (7), respectively. In the crystal, inversion dimers are formed through pairs of C—H...O inter­actions.
Follow Acta Cryst. E
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds