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Selecteted thiopyran-4-one examples, see: (f) Rosiak, A.; Christoffers, J. Tetrahedron Lett. 2006, 47, 5095.
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(j) Vedejs, E.; Eberlein, T. H.; Mazur, D. J.; McClure, C. K.; Perry, D. A.; Ruggeri, R.; Schwartz, E.; Stults, J. S.; Varie, D. L.; Wilde, R. G.; Wittenberger, S. J. Org. Chem. 1986, 51, 1556.
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0037163266
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Selected benzo[b]thiepinone derivatives, see: (m) Bendorf, H. D.; Colella, C. M.; Dixon, E. C.; Marchetti, M.; Matukonis, A. N.; Musselman, J. D.; Tiley, T. A. Tetrahedron Lett. 2002, 43, 7031.
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Selected benzo[b]thiepinone derivatives, see: (m) Bendorf, H. D.; Colella, C. M.; Dixon, E. C.; Marchetti, M.; Matukonis, A. N.; Musselman, J. D.; Tiley, T. A. Tetrahedron Lett. 2002, 43, 7031.
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24
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0010915254
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Capon, B.; Kwok, F-C. J. Am. Chem. Soc. 1989, 111, 5346. 2-Methyl thiophen-3-ones 4b, 4g, and 4l rapidly decomposed at ambient temperature over 1-24 h, and thus are isolated as their O-acetyl thiophene derivatives, see the Supporting Information.
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Capon, B.; Kwok, F-C. J. Am. Chem. Soc. 1989, 111, 5346. 2-Methyl thiophen-3-ones 4b, 4g, and 4l rapidly decomposed at ambient temperature over 1-24 h, and thus are isolated as their O-acetyl thiophene derivatives, see the Supporting Information.
-
-
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26
-
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41849106383
-
-
cis- and trans-Chloro vinyl ketones 3a undergo cyclization, respectively, thus a mixture of stereoisomers was employed in all other substrates 3b-o.
-
cis- and trans-Chloro vinyl ketones 3a undergo cyclization, respectively, thus a mixture of stereoisomers was employed in all other substrates 3b-o.
-
-
-
-
27
-
-
41849135339
-
-
α′-Methyl-substituted β-chloro vinyl ketones 3b, 3g, and 3l are expected to enhance the competition between Michael reaction and alkylation due to the steric hinderance of a methyl group.
-
α′-Methyl-substituted β-chloro vinyl ketones 3b, 3g, and 3l are expected to enhance the competition between Michael reaction and alkylation due to the steric hinderance of a methyl group.
-
-
-
-
28
-
-
41849098039
-
-
We are currently investigating the synthesis of β-keto thioketone of 7 to confirm the possibility of crossover between 5 and 8, or 6 and 7
-
We are currently investigating the synthesis of β-keto thioketone of 7 to confirm the possibility of crossover between 5 and 8, or 6 and 7.
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29
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41849108722
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Le Guillanton, G.; Do, Q. T.; Simonet, J. Bull. Soc. Chim. Fr. 1990, 127, 427.
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30
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41849083368
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Oxidative S-S coupling of 7 followed by intramolecular alkylation to 9 cannot be ruled out.
-
Oxidative S-S coupling of 7 followed by intramolecular alkylation to 9 cannot be ruled out.
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31
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23944452023
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Ikemoto, N.; Liu, J.; Brands, K. M. J.; McNamara, J. M.; Reider, P. Tetrahedron 2003, 59, 1317.
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34
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41849115500
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2O conditions, no reaction was observed.
-
2O conditions, no reaction was observed.
-
-
-
-
35
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-
34547172676
-
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and references cited therein. Sulfone analogues for cell imaging application, see
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Sulfone analogues for cell imaging application, see: Toutchkine, A.; Nguyen, D.; Hahn, K. M. Org. Lett. 2007, 9, 2775 and references cited therein.
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