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Preparation and X-Ray Crystal Structure of 3-(4-(Dimethylamino)phenyl)-2-(phenylamino)isoquinolin-1(2H)-one, 3-(4-Methoxyphenyl)-2-(phenylamino)isoquinolin-1(2H)-one, and 2-Methyl-N′-(4-methylbenzoyl)-N′-phenylbenzohydrazide from Polylithiated 2-methylbenzoic Acid Phenylhydrazide and Methyl 4-dimethylaminobenzoate, Methyl 4-methoxybenzoate, or Methyl 4-methylbenzoate

✍ Scribed by William G. Shuler, Ellyn A. Smith, Sloan M. Hess…


Book ID
120688998
Publisher
Springer
Year
2012
Tongue
English
Weight
502 KB
Volume
42
Category
Article
ISSN
1572-8854

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Preparation of 4-hydroxy-3-substituted,
✍ Sharon E. Davis; A. Cameron Church; Rebecca C. Tummons; Charles F. Beam 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 305 KB

## Abstract C(α)‐Carboxylic acid esters were treated with excess lithium diisopropylamide, condensed with methyl salicylates or methyl thiosalicylate, followed by acid cyclization to either 4‐hydroxy‐3‐substituted, 2__H__‐1‐benzopyran‐2‐ones (coumarins), or 2__H__‐1‐benzothiopyran‐2‐ones (thiocouma