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Study of Insertion Reactions with Phosphorus Ylides − On Reactions between 4-(4-Methylphenyl)-2,3-benzoxazin-1-one and Alkylidene Phosphoranes

✍ Scribed by Wafaa Mahmoud Abdou; Amin Farouk Mohammed Fahmy; Azza Abdel-Azeem Kamel

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
151 KB
Volume
2002
Category
Article
ISSN
1434-193X

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✦ Synopsis

4-(4-Methylphenyl)-2,3-benzoxazin-1-one (1) reacts thermally with a series of alkylidene phosphoranes and the relevant salts to give mainly substituted isoquinolines. Thus, compound 1 reacts with ester ylides 2a and 2b to give isoquinolones 7a and 7b, whereas with benzoylmethylenetriphenylphosphorane (3a), compound 7c was obtained together with the corresponding ylide 9a. The latter compound was treated

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