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Spectra for:
Naoto Chatani, Katsuya Amako, Mamoru Tobisu, Taku Asaumi, Yoshiya Fukumoto, Shinji Murai

Compound 1B 4,6-DIMETHOXY-BENZOFURAN-2,3-DIONE

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4,6-DIMETHOXY-BENZOFURAN-2,3-DIONE
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13C NMR Spectrum

Compound 1C 4,6-BIS-(1,1-DIMETHYLETHYL)-BENZOFURAN-2,3-DIONE

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4,6-BIS-(1,1-DIMETHYLETHYL)-BENZOFURAN-2,3-DIONE
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13C NMR Spectrum

Compound 2A 4,6-DIMETHYL-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE

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4,6-DIMETHYL-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE
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13C NMR Spectrum

Compound 2B 4,6-DIMETHOXY-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE

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4,6-DIMETHOXY-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE
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13C NMR Spectrum

Compound 2C 4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE

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4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE
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13C NMR Spectrum

Compound 3A 4,6-DIMETHYL-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-3,2'-FURAN]-2,5'-DIONE

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4,6-DIMETHYL-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-3,2'-FURAN]-2,5'-DIONE
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13C NMR Spectrum

Compound 3B 4,6-DIMETHOXY-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-3,2'-FURAN]-2,5'-DIONE

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4,6-DIMETHOXY-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-3,2'-FURAN]-2,5'-DIONE
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13C NMR Spectrum

Compound 3D 7-(1,1-DIMETHYLETHYL)-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-3,2'-FURAN]-2,5'-DIONE

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7-(1,1-DIMETHYLETHYL)-3',4'-DIHYDRO-SPIRO-[BENZOFURAN-3,2'-FURAN]-2,5'-DIONE
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13C NMR Spectrum

Compound 4 4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOPENTA-[C]-FURAN]-3,6'-DIONE;MINOR-STEREOMER

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4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOPENTA-[C]-FURAN]-3,6'-DIONE;MINOR-STEREOMER
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13C NMR Spectrum

Compound 4 4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOPENTA-[C]-FURAN]-3,6'-DIONE;MAJOR-STEREOMER

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4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOPENTA-[C]-FURAN]-3,6'-DIONE;MAJOR-STEREOMER
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13C NMR Spectrum

Compound 5 4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOHEXA-[C]-FURAN]-3,7'-DIONE;MINOR-STEREOMER

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4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOHEXA-[C]-FURAN]-3,7'-DIONE;MINOR-STEREOMER
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13C NMR Spectrum

Compound 5 4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOHEXA-[C]-FURAN]-3,7'-DIONE;MAJOR-STEREOMER

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4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-CYCLOHEXA-[C]-FURAN]-3,7'-DIONE;MAJOR-STEREOMER
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13C NMR Spectrum

Compound 6 4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE

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4,6-BIS-(1,1-DIMETHYLETHYL)-3',4'-DIPHENYL-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE
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13C NMR Spectrum

Compound 7 4,6-BIS-(1,1-DIMETHYLETHYL)-3'-METHYL-4'-TRIMETHYLSILYL-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE

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4,6-BIS-(1,1-DIMETHYLETHYL)-3'-METHYL-4'-TRIMETHYLSILYL-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE
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13C NMR Spectrum

Compound 8 4,6-BIS-(1,1-DIMETHYLETHYL)-3'-PHENYL-4'-TRIMETHYLSILYL-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE

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4,6-BIS-(1,1-DIMETHYLETHYL)-3'-PHENYL-4'-TRIMETHYLSILYL-SPIRO-[BENZOFURAN-2,2'-FURAN]-3,5'-DIONE
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13C NMR Spectrum

Citation

Citation J.ORG.CHEM.,68,1591(2003)
Journal The Journal of Organic Chemistry
Issue 4
Volume 68
Page(s) 1591-1593
Year 2003
Author(s) Naoto Chatani, Katsuya Amako, Mamoru Tobisu, Taku Asaumi, Yoshiya Fukumoto, Shinji Murai
Publisher American Chemical Society (ACS)
DOI 10.1021/jo0267495