title: Ethyl 1,3,10,12-tetra-phenyl-19,20-dioxa-hexa-cyclo-[10.6.1.1.0.0.0]icosa-4(9),5,7,13(18),14,16-hexa-ene-2-carboxyl-ate.
abstract: The title compound, C(45)H(34)O(4), is the product of a tandem 'pincer' Diels-Alder reaction consisting of two consecutive [4 + 2] cyclo-additions between two 2-benzofuran units and ethyl propiolate. The mol-ecule comprises a fused hexa-cyclic system containing four five-membered rings, which are in the usual envelope conformation, and two six-membered rings. In addition, four phenyl rings are attached to the hexa-cyclic system. The packing is stabilized by C-H⋯π inter-actions.
authors: P
authors: P
authors: Narayanan
authors: K
authors: K
authors: Sethusankar
authors: Meganathan
authors: M
authors: Nandhakumar
authors: Arasambattu K
authors: AK
authors: Mohanakrishnan
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