104600-19-3Relevant articles and documents
Synthesis of pyrazolo[1,5-b][1,2]benzisothiazoles
Moyroud, Joel,Chene, Alain,Guesnet, Jean-Luc,Mortier, Jacques
, p. 221 - 228 (2007/10/02)
The synthesis of some pyrazolo[1,5-b] [1,2]benzisothiazoles is described. The route is based on the reaction between 3(5)-[2′-methylthiophenyl]pyrazoles and its derivatives with N-chlorosuccinimide.
Cycloaracylation of Enamines, I. - Synthesis of 4-Quinolone-3-carboxylic Acids
Grohe, Klaus,Heitzer, Helmut
, p. 29 - 37 (2007/10/02)
Starting with o-halobenzoyl chlorides 4 and open-chain secondary enamines 5, a new synthesis of 4-quinolone-3-carboxylic acids 12 is described.The reaction of 7-haloquinolone-3-carboxylic acids 12a-k with aliphatic amines 14 produces highly active antibacterial 7-aminoquinolone-3-carboxylic acids 15.The main product of the 1-cyclopropyl series, "ciprofloxacin" (15a), is being developed as a broad-spectrum chemotherapeutic agent.