PL15083B3 - Method for the preparation of o-o-diacetyl-diphenol-isatin. - Google Patents
Method for the preparation of o-o-diacetyl-diphenol-isatin. Download PDFInfo
- Publication number
- PL15083B3 PL15083B3 PL15083A PL1508329A PL15083B3 PL 15083 B3 PL15083 B3 PL 15083B3 PL 15083 A PL15083 A PL 15083A PL 1508329 A PL1508329 A PL 1508329A PL 15083 B3 PL15083 B3 PL 15083B3
- Authority
- PL
- Poland
- Prior art keywords
- isatin
- diacetyl
- diphenol
- phenol
- preparation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims 2
- 229950000967 oxyphenisatine acetate Drugs 0.000 title description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229960000583 acetic acid Drugs 0.000 claims description 3
- 239000012362 glacial acetic acid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- -1 o-diacetyl-phenol-isatin Chemical compound 0.000 claims 2
- JXDYKVIHCLTXOP-UHFFFAOYSA-N isatin Chemical compound C1=CC=C2C(=O)C(=O)NC2=C1 JXDYKVIHCLTXOP-UHFFFAOYSA-N 0.000 description 4
- 239000012345 acetylating agent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- SJDACOMXKWHBOW-UHFFFAOYSA-N oxyphenisatine Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2NC1=O SJDACOMXKWHBOW-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Description
Najdluzszy czas trwania patentu do dn. 24 kwietnia 1941 r.W celu otrzymania o-o-dwuacetylo- dwufenolo-izatyny stosuje sie wedlug pa¬ tentu Nr 4774 d^wufenolo-izatyne, która poddaje sie dzialaniu srodków acetyluja- cych. Obecnie stwierdzono, ze zamiast czystej dwufenolo-izatyny mozna jako produkty wyjsciowe stosowac bezposred¬ nio fenol i izatyne, i otrzymywac o-o- dwuacetylo-dwufenolo-izatyne, mianowi¬ cie w ten sposób, ze w roztworze lodowa¬ tego kwasu octowego dziala sie izatyna na fenol, z dodatkiem niewielkich ilosci kwa¬ su siarkowego, na cieplo, a nastepnie o- grzewajac dalej, dodaje sie bezwodnika kwasu octowego.Otrzymana z dobra wydajnoscia o-o- dwuacetylo-dwufenolo-izatyna po jedno¬ razowej krystalizacji z lodowatego kwasu octowego, posiada punkt topnienia w 242The longest term of the patent until On April 24, 1941, in order to obtain o-o-diacetyl-diphenol-isatin, according to the patent No. 4774, d-vufenol-isatin is used, which is subjected to the action of acetylating agents. It has now been found that instead of pure diphenol isatin, it is possible to use phenol and isatin directly as starting products, and to obtain o-diacetyl-diphenol-isatin, namely that isatin acts on the glacial acetic acid solution. phenol, with the addition of small amounts of sulfuric acid, while warming and then heating further, acetic acid anhydride is added. The good yield of o-diacetyl-diphenol-isatin has a point of crystallization from glacial acetic acid once. melting at 242
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL15083B3 true PL15083B3 (en) | 1931-12-31 |
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