title: Tetra-ethyl 1,1'-(ethane-1,2-di-yl)bis-(2,5-dimethyl-1H-pyrrole-3,4-dicarboxyl-ate).
abstract: The asymmetric unit of the title compound, C(26)H(36)N(2)O(8), comprises two independent mol-ecules. In each mol-ecule, the two pyrrole rings are linked by a -CH(2)CH(2)- bridge, with dihedral angles between the two pyrrole rings of 14.5 (3) and 16.4 (3)° in the two mol-ecules. Each pyrrole ring carries 2- and 5-methyl substituents and eth-oxy-carbonyl groups at the 3- and 5-positions.
authors: Shi-Fan
authors: SF
authors: Wang
authors: Chao
authors: C
authors: Li
authors: Shuai
authors: S
authors: Chen
references: J Org Chem. 2004 Jan 9;69(1):213-6
references: 14703403
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677