ORGANIC AZIDES IN HETEROCYCLIC SYNTHESIS .15. NUCLEOPHILIC-SUBSTITUTION AND RING-CLOSURE REACTIONS OF 4-CHLORO-3-NITRO-2-QUINOLONES

被引:65
作者
ROSCHGER, P
FIALA, W
STADLBAUER, W
机构
[1] Institute of Organic Chemistry, Karl Franzens University of Graz, Graz, A-8010
关键词
D O I
10.1002/jhet.5570290141
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
4-Chloro-3-nitro-2-quinolones 3 obtained from the 4-hydroxy quinolones 1 by nitration and chlorination, reacted with sodium azide to the 4-azido derivatives 4 which cyclized on thermolysis to yield the furoxanes 5. Nucleophilic substitution reactions of 3 led to the 4-amino-, 4-fluoro- and 4-alkoxy-3-nitroquinolones 7, 8 and 9, respectively. With thiols either 4-thio-3-nitro- 10 or 3,4-dithioquinolones 11 were obtained depending on the basic catalyst.
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页码:225 / 231
页数:7
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