Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... 3-Bromoindoles, 3-unsubstituted indoles, or 3-formylindoles on treatment with NBS (2,3, or 4 molar equivalents, respectively) in -butanol give 3,3-dibromooxindoles, and these readily yield the corresponding isatins on hydrolysis. ... Cookies are used by this site. To decline or ...
