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One-Step Synthesis of Furo[2,3- d ]Pyrimidine-2,4(1 H ,3 H )-Diones Using the Can-Mediated Furan Ring Formation

✍ Scribed by Kobayashi, Kazuhiro; Tanaka, Hideo; Tanaka, Koujirou; Yoneda, Keiichi; Morikawa, Osamu; Konishi, Hisatoshi

Book ID
118255200
Publisher
Taylor and Francis Group
Year
2000
Tongue
English
Weight
477 KB
Volume
30
Category
Article
ISSN
0039-7911

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## Abstract The one‐pot reaction of ethyl 1‐cyclopropyl‐6,7,8‐trifluoro‐1,4‐dihydro‐4‐oxoquinoline‐3‐carboxylate (6) with __tert__‐butyl acetoacetate gave 3‐__tert__‐butyl 7‐ethyl 9‐cyclopropyl‐4‐fluoro‐6,9‐dihydro‐2‐methyl‐6‐oxofuro[3,2‐__h__]quinoline‐3,7‐dicarboxylate (5). This regioselective cy