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85069281711
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note
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4S: C 67.61%, H 8.88%, S 7.85%. Found: C 67.39%, H 9.00%, S 8.10%.
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25
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85069274973
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note
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4 2 M, allowed to reach room temperature and then refluxed overnight. Extraction with dichloromethane gave a crude product which was purified by chromatography on silica gel to yield pure butenolides 7. Enantiomeric purities were determined by GC analysis on a 25 m×O.25 mm (ID) Chrompack CP-Chirasil-DEX-CB column.
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0029165982
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Takahata, H.; Uchida, Y.; Momose, T. J. Org. Chem. 1995, 60, 5628-5633.
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(1995)
J. Org. Chem.
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Takahata, H.1
Uchida, Y.2
Momose, T.3
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27
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0022151538
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Franck-Neumann, M.; Sedrati, M.; Vigneron, J. P.; Bloy, V. Angew. Chem., Int. Ed. Engl. 1985, 24, 996-998.
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Franck-Neumann, M.1
Sedrati, M.2
Vigneron, J.P.3
Bloy, V.4
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