Synthesis of 2,2′-Biindolyls; Potential Intermediates for Indolocarbazole Alkaloids
摘要:
The synthesis of 2,2'-biindolyls oxygenated in the benzenoid ring is reported. Wittig-Horner reaction of the phosphonate esters of 1-benzenesulfonyl-2-bromomethyl-3-substituted indoles with o-nitrobenzaldehydes followed by deoxygenation with triethyl phosphite gave 2,2'-biindolyls.