173382-01-9Relevant academic research and scientific papers
On the Cycloaddition Approach to Indolocarbazoles
Barry, John F.,Wallace, Timothy W.,Walshe, Nigel D. A.
, p. 12797 - 12806 (2007/10/02)
2,2'-Biindolyl 9 reacts with electron-deficient dienophiles at 100-110 deg C to give low to moderate yields of Michael addition and formal cycloaddition products, with the former predominant; the products derived from 9 and 2-(phenylsulphinyl)maleimides 14 and 15 undergo in situ elimination of benzenesulphenic acid, leading to 2,2'-biindolyl-substituted maleimides which can be efficiently photocyclised into indolocarbazoles.
