Synthesis and resolution of a C2-symmetrical indolo-2,3-quinodimethane dimer
摘要:
Thermolysis of ethyl 3-dimethylaminomethyl-2-indolylacetate generated an indolo-2,3-quinodimethane as evidenced by its dimerization to a first '4+2' dimer, which rearranged at a higher temperature to a cyclooctadienic diester. Resolution of this last diester in the form of the amides derived from (-)-alpha-methyl-benzylamine proved it to be C-2-symmetrical. (C) 1999 Elsevier Science Ltd. All rights reserved.