2,3-Dialkylindoles react with dichlorocarbene giving ad- dition (2,3-dialkyl-3-dichlorumethyl-3_H -indoles or in- dolenines) and ring expansion products (2,4-dialkyl-3- chloroquinolines).t This reaction is very similar to that of 2,3-dialkyl- pyrroles with dichlorocarbene 2 in which 3-chloropyri- dines and 2-dichloromethyl-2H-pyrroles are formed. In a preceeding note 3 we have shown the easy con- version of the phenylmercury derivative 1--isolated from the ...
