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. ... A new route to 4-substituted indoles involves aza claisen rearrangement of a meta-substituted N-allyl aniline followed by ozonolytic cleavage of the resultant 1,2,3-trisubstituted aniline derivative. ... Cookies are used by this site. To decline or learn more, visit our Cookies ...