141972-21-6Relevant articles and documents
Synthesis of 3,4-Bridged Indoles by Photocyclisation Reactions. Part 2. Photocyclisation of Halogenoacetyl Tryptophol Derivatives and α-Chloro Indol-3-ylalkanoate Esters
Beck, Anthony L.,Mascal, Mark,Moody, Christopher J.,Coates, William J.
, p. 813 - 822 (2007/10/02)
Irradiation of the trichloroacetates 2, 4 and 5, derived from the corresponding tryptophols, in methanolic acetonitrile results in photocyclisation to the indole 4-position, and the formation of the pyrrolobenzoxocines 9-11.Attempted photocyclisation of the 'reversed' α-chloro esters 15a, 15b and 18 was thwarted by readily occurring elimination of HCl, although the dimethyl compound 15c did cyclise to give the cycloheptaindole 20 upon irradiation in acetonitrile.
