Subscribe to RSS
Please copy the URL and add it into your RSS Feed Reader.
https://www.thieme-connect.de/rss/thieme/en/10.1055-s-00000084.xml
Synthesis 2011(3): 469-479
DOI: 10.1055/s-0030-1258364
DOI: 10.1055/s-0030-1258364
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
3-(Dichloroacetyl)chromone; A New Building Block for the Synthesis of Formylated Purine Isosteres: Design and Synthesis of Fused α-(Formyl)pyridines
Further Information
Publication History
Received
21 October 2010
Publication Date:
15 December 2010 (online)


Abstract
The first synthesis of 3-(dichloroacetyl)chromone from 3-(dimethylamino)-1-(2-hydroxyphenyl)propen-1-one and dichloroacetyl chloride is described. The reaction of electron-rich aminoheterocycles with 3-(dichloroacetyl)chromone provides a set of diverse fused pyridines bearing the CHCl2-substituent at the α-position of the pyridine core. Subsequent hydrolysis leads to the formation of annulated α-(formyl)pyridines.
Key words
3-(dichloroacetyl)chromone - 4H-1-benzopyran-4-one - heterocyclic amines - fused pyridines - annulation reactions