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Structure of 5-isopropyl-4-methyl-1,3-diphenyl-3a,4,5,9b-tetrahydropyrazolo[3,4-c]isoquinoline

✍ Scribed by Mercier, R. ;Kitane, S. ;Tshiamala, K. ;Vebrel, J. ;Laude, B. ;Sheldrick, G. M.

Book ID: 114503319
Publisher: International Union of Crystallography
Year: 1986
Tongue: English
Weight: 312 KB
Volume: 42
Category: Article
ISSN: 0108-2701
DOI: 10.1107/s0108270186090327

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## Abstract The synthesis of 7,8‐dihydro‐5(6__H__)‐quinolinone (**3**) from commercially available 3‐amino‐2‐cyclohexen‐1‐one (**1**) and 3‐(dimethylamino)acrolein (**4**) in 23% yield avoids the preparation of propynal (**2**). Conversion of 5‐(4‐methylphenylsulfonyl)‐6,7,8,9‐tetrahydro‐5__H__‐pyr