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. ... Nitrous acid deaminated indolenines , to hemiketals , , which were reduced (Et 3 SiH/TFA) to hexahydrodibenzofurans , . was identified with a compound prepared from Pummerer's ketone . ... Revue : RK Brown, Indoles, WJ Houlihan éd., Wiley-Interscience, Vol. I, pp. 303-304.