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Thiopyranothiopyran chemistry. 2. Synthesis of 2,4-diphenyl-4H-benzo[e]thiopyrano[3,4-b]thiopyran-10-one

✍ Scribed by Chen, Chin H.; Kelts, Larry W.; Luss, Henry R.; Fox, John L.

Book ID
126980820
Publisher
American Chemical Society
Year
1984
Tongue
English
Weight
662 KB
Volume
49
Category
Article
ISSN
0022-3263

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Starting from tetrahydrothiopyran-4-one (4d) a rational NMR spectra, redox behavior, and crystal structure (H 4 -3a and 3a). The very low solubility of 3a and 3b prevented eight-step synthesis of 3a has been developed with 25 % overall yield. This route passes H 4 -3a and H 2 -3a which are further r