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A Versatile Strategy for the Synthesis of 2,6-Disubstituted Dihydropyranones

โœ Scribed by Wang, Hua; Shuhler, Brian J.; Xian, Ming


Book ID
126037183
Publisher
American Chemical Society
Year
2007
Tongue
English
Weight
97 KB
Volume
72
Category
Article
ISSN
0022-3263

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A versatile new strategy for the synthes
โœ Martin G. Banwell; Renรฉ Onrust ๐Ÿ“‚ Article ๐Ÿ“… 1985 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 209 KB

Pi= Swern-type oxidation of various 7-halogenobicyclo[4.l.O]heptane-2,3-or -3,4- 10 s affords the corresponding bicyclic diketones which undergo in situ ring expansion and loss of hydrogen halide to give a-tropolones in high yieme quantitative conversion of the isolable 1,4-diketone 26 into the y-tr