A Novel Route to Substituted 3-Methylidenechroman-2-ones and 3-Methylchromen-2-ones.
✍ Scribed by Tomasz Janecki; Tomasz Wasek
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 124 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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📜 SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract The intramolecular cyclization of 2‐acylphenylacetonitriles **1** under strongly acidic conditions easily affords 1‐substituted 2__H__‐isoquinolin‐3‐ones **2** in excellent yields.
## Abstract The isomeric 2‐substituted‐7(5)‐methyl‐2,3‐dihydro‐5(7)__H__‐oxazolo[3,2‐__a__]pyrimidin‐5‐ones **3a‐b** and 7‐ones **2a‐b,7a** were synthesized by cyclocondensation from the 5‐substituted‐2‐amino‐2‐oxazolines **1a‐b** with biselectrophiles. In boiling ethanol, the reaction of **1a‐b**