SYNTHESIS OF NEW BENZO[e]DIBENZOFURO[2,3-b]-OXEPIN-5(14H)-ONES.
Abstract:
<p align="justify"> The new ring systems, benzo[e]dibenzofuro[2,3-b]oxepin-5(14H)-one and benzo[e]dibenzofuro[2,1-b]oxepin-5(14H)-one were obtained by cyclizing of 2-(2-dibenzoftuyloxymethyl)benzoic acid in the presence of polyphosphoric acid ester.By cyclization of the 2-(1-methoxy-2-dibenzofuryloxymethyl) benzoic acid was obtained benzo[e]dibenzofuro[2,3-b]-oxepin-12-methoxy-5-one with a indubitable structure. The structure of the new compounds was proved by means of <sup>1</sup>H-and <sup>13</sup>C-NMR spectra. </p>
<p align="justify"> The new ring systems, benzo[e]dibenzofuro[2,3-b]oxepin-5(14H)-one and benzo[e]dibenzofuro[2,1-b]oxepin-5(14H)-one were obtained by cyclizing of 2-(2-dibenzoftuyloxymethyl)benzoic acid in the presence of polyphosphoric acid ester.By cyclization of the 2-(1-methoxy-2-dibenzofuryloxymethyl) benzoic acid was obtained benzo[e]dibenzofuro[2,3-b]-oxepin-12-methoxy-5-one with a indubitable structure. The structure of the new compounds was proved by means of <sup>1</sup>H-and <sup>13</sup>C-NMR spectra. </p>
DOI: 10.48141/SBJCHEM.v4.n4.1996.101_1996.pdf
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