Electrosynthesis of 3-Chloro-1,4-disubstituted-2(1 H )- quinolinones and 3,3-Dichloro-4-hydroxy-1,4-disubstituted- 3,4-dihydro-2(1 H )-quinolinones, as Well as a New Convenient Process to Dioxindoles †
✍ Scribed by Batanero, Belén; Barba, Fructuoso
- Book ID
- 121370032
- Publisher
- American Chemical Society
- Year
- 2003
- Tongue
- English
- Weight
- 75 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0022-3263
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📜 SIMILAR VOLUMES
## Abstract The ureas **3** which are obtained from 3‐(benzylamino)propanenitrile (**1**) and various isocyanates (**2**) cyclize readily upon heating in ethanol, in the presence of hydrochloric acid, to form 3‐substituted 1‐benzyldihydro‐2,4‐(1__H__,3__H__)pyrimidinediones (**11**) in good yield.
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## Abstract Synthesis of 1,2‐disubstituted‐3‐hydroxy‐4(1__H__)‐quinolinones by the cyclization of __N__‐substituted phenacyl or acetonyl anthranilates is described. Two methods were employed for cyclization of anthranilates. Heating in polyphosphoric acid has a wide scope of applicability. The ther