Synthesis of 1,4,5,6-tetrahydropyrazolo[
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J. Donald Albright; Xuemei Du
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Article
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2000
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Journal of Heterocyclic Chemistry
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English
โ 434 KB
## Abstract The synthesis of 7,8โdihydroโ5(6__H__)โquinolinone (**3**) from commercially available 3โaminoโ2โcyclohexenโ1โone (**1**) and 3โ(dimethylamino)acrolein (**4**) in 23% yield avoids the preparation of propynal (**2**). Conversion of 5โ(4โmethylphenylsulfonyl)โ6,7,8,9โtetrahydroโ5__H__โpyr