Ring closure and rearrangement reactions
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Wolfgang Stadlbauer; Susanne Prattes; Werner Fiala
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Article
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1998
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Journal of Heterocyclic Chemistry
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English
⚖ 707 KB
## Abstract 4‐Azido‐2‐oxoquinoline‐3‐carboxylates and 4‐azidocoumarin‐3‐carboxylates 6, which were obtained from the corresponding 4‐hydroxy derivatives 1 __via__ 4‐tosylates 2 or 4‐chloro compounds 4, cyclized upon thermolysis to 3‐alkoxyisoxazolo[4,3‐__c__]quinolin‐4(5__H__)‐ones or the correspon