CH136380A - Process for the preparation of a formaldehyde condensation product. - Google Patents
Process for the preparation of a formaldehyde condensation product.Info
- Publication number
- CH136380A CH136380A CH136380DA CH136380A CH 136380 A CH136380 A CH 136380A CH 136380D A CH136380D A CH 136380DA CH 136380 A CH136380 A CH 136380A
- Authority
- CH
- Switzerland
- Prior art keywords
- condensation product
- formaldehyde
- preparation
- formaldehyde condensation
- formula
- Prior art date
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims description 24
- 239000007859 condensation product Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims 2
- 238000002360 preparation method Methods 0.000 title description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 3
- 239000000981 basic dye Substances 0.000 claims description 2
- 239000000975 dye Substances 0.000 claims description 2
- 239000013067 intermediate product Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- ZTUKGBOUHWYFGC-UHFFFAOYSA-N 1,3,3-trimethyl-2-methylideneindole Chemical compound C1=CC=C2N(C)C(=C)C(C)(C)C2=C1 ZTUKGBOUHWYFGC-UHFFFAOYSA-N 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- LPXQRXLUHJKZIE-UHFFFAOYSA-N 8-azaguanine Chemical compound NC1=NC(O)=C2NN=NC2=N1 LPXQRXLUHJKZIE-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/08—Indoles; Hydrogenated indoles with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Yerfaliren zur Herstellung eines Formaldevydkondensationsproduktes. Es wurde gefunden, dass die Herstellung eines Formaldehydkoridensationsproduktes in einfacher und glatter Weise gelingt, wenn man 1 Mol. Formaldehyd auf 2 Hol. 1,3,3- Tiimethyl-2-methyleiiindoliri der Formel
EMI0001.0007
einwirken lässt.
Das gebildete Kondensationsprodukt der Formel
EMI0001.0008
welches ein für die Herstellung von Farb stoffen .geeignetes Zwischenprodukt darstellt, ist in den gebräuchlichen Lösungsmitteln löslich. Es bildet beim Umkristallisieren aus Methylalkohol weisse Nadeln vom Schmelz punkt 124 und färbt sich an der Luft unter Bildung eines roten basischen Farbstoffes. <I>Beispiel:</I> Eine Lösung von 173 Teilen 1,3,3-Ti-i- methyl-2-metliyleriindolin in 500 Teilen Al kohol wird mit 41,6 Teilen einer 38 /oigen Lösung von Formaldehyd bei gewöhnlicher Temperatur versetzt. Alsbald beginnt die Temperatur zu steigen.
Man rührt bei 30-35 , wobei sich ein weisser kristalliner Nieder schlag abscheidet. Nach einigen Stunden ist die Reaktion beendigt und es hat sich ein dicker Brei gebildet. AZan kühlt ab, filtriert, wäscht das Reaktionsprodukt mit Alkohol aus und trocknet es im Vakuum bei 30-3ä .
Die Kondensation mit Formaldehyd kann auch ohne Verdünnungs- bezw. Lösungs mittel ausgeführt werden.
Yerfaliren for the production of a formaldehyde condensation product. It has been found that the preparation of a formaldehyde coridation product is possible in a simple and smooth manner if 1 mole of formaldehyde is added to 2 hol. 1,3,3-Tiimethyl-2-methyleiiindoliri of the formula
EMI0001.0007
can act.
The formed condensation product of the formula
EMI0001.0008
which is an intermediate product suitable for the production of dyes, is soluble in common solvents. When recrystallized from methyl alcohol, it forms white needles with a melting point of 124 and changes color when exposed to air to form a red basic dye. <I> Example: </I> A solution of 173 parts of 1,3,3-ti-i-methyl-2-methylene-iindoline in 500 parts of alcohol is mixed with 41.6 parts of a 38% solution of formaldehyde at ordinary temperature offset. The temperature soon began to rise.
The mixture is stirred at 30-35, a white crystalline precipitate separating out. After a few hours, the reaction is over and a thick paste has formed. AZan cools, filtered, the reaction product washes out with alcohol and dried in vacuo at 30-3ä.
The condensation with formaldehyde can be or without dilution. Solvent run.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH136380T | 1928-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH136380A true CH136380A (en) | 1929-11-15 |
Family
ID=4394084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH136380D CH136380A (en) | 1928-05-19 | 1928-05-19 | Process for the preparation of a formaldehyde condensation product. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH136380A (en) |
-
1928
- 1928-05-19 CH CH136380D patent/CH136380A/en unknown
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