Glycerol as a promoting medium for electrophilic activation of aldehydes: catalyst-free synthesis of di(indolyl)methanes, xanthene-1,8(2H)-diones and 1-oxo-hexahydroxanthenes
Fei
He
,
Peng
Li
,
Yanlong
Gu
and
Guangxing
Li
Green Chem., 2009, 11, 1767-1773
DOI:
10.1039/B916015A
Received
17 Jul 2009,
Accepted
04 Aug 2009
First published on the web
07 Sep 2009