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 two step synthesis of 2-vinyl indoles is described. Reaction of the anions of 2-methylindole-3-carboxylates ( ) and ( ) with ketones and aldehydes leads directly to 2-vinylindole-3-carboxylic acids ( ) and esters ( ), respectively. Decarboxylation of the ...