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4,6-dimethyl-2h,8h-benzo[1, 2-b: 5, 4-b'] dipyran-2,8-dione. formation of linear and angular isomers in the pechmann reaction

✍ Scribed by A.G. Osborne

Book ID
108372032
Publisher
Elsevier Science
Year
1983
Tongue
French
Weight
556 KB
Volume
39
Category
Article
ISSN
0040-4020

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An efficient synthesis of novel spiro 2,3,7,8-tetrahydro-benzo[1,2-b:5,4-b 0 ]dipyran-4,6-dione and 2,3,8,9tetrahydro-benzo[1,2-b:4,3-b 0 ]dipyran-4,10-dione derivatives in high yields under microwave irradiation is described. The reaction was also studied under conventional heating conditions.

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