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Thin-layer chromatographic analysis of some substituted dianilino-3,6-dihalo-1,4-benzoquinones

โœ Scribed by S. K. Jain; R. R. Gupta; K. G. Ojha


Book ID
112730452
Publisher
Springer
Year
1978
Tongue
English
Weight
76 KB
Volume
11
Category
Article
ISSN
0009-5893

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Several methods are available for the synthesis of coumarin ring systeml. We nQy report a new method for the synthesis of coumarins by oxidative cyclisation of some substituted 2allylphenols by 2,3=dichloro-5,6-dicyano-1,4-bensoguinone 0). 7-Allyloxy-3-methylflavone2 on Claisen rearrangement b vacu