CH137944A - Process for the preparation of a formaldehyde condensation product. - Google Patents
Process for the preparation of a formaldehyde condensation product.Info
- Publication number
- CH137944A CH137944A CH137944DA CH137944A CH 137944 A CH137944 A CH 137944A CH 137944D A CH137944D A CH 137944DA CH 137944 A CH137944 A CH 137944A
- Authority
- CH
- Switzerland
- Prior art keywords
- condensation product
- preparation
- formaldehyde condensation
- formaldehyde
- mol
- Prior art date
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims description 21
- 239000007859 condensation product Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 235000005811 Viola adunca Nutrition 0.000 claims description 2
- 240000009038 Viola odorata Species 0.000 claims description 2
- 235000013487 Viola odorata Nutrition 0.000 claims description 2
- 235000002254 Viola papilionacea Nutrition 0.000 claims description 2
- 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
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate 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
- C07D209/56—Ring systems containing three or more rings
- C07D209/58—[b]- or [c]-condensed
- C07D209/60—Naphtho [b] pyrroles; Hydrogenated naphtho [b] pyrroles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Formaldehydkondensationsproduktes. Es wurde gefunden, dass die Herstellung eines Fo:rmaldehydkondensationsproduktes in einfacher und glatter 'Weise gelingt, wenn man 1 Mol. Formaldehyd auf 2, Mol. 1,3,3- fTrimethyl-2-metthylen-ss-na.phthindolin der Formel:
EMI0001.0012
einwirken lässt.
Das gebildete Kondensationsprodukt der Formel:
EMI0001.0015
@.;#eli;hea ein für die Herstellung von Farb stoffen. geeignetes Zwischenprodukt darstellt, ist in den gebräuchlichen LösAngshmitteln löslich. Es bildet beim Umkristallisieren aus Methylalkohol weisse Nadeln vom Schmelz punkt 220-225 und färbt sich an der Luft unter Bildung eines blauvioletten basischen Farbstoffes.
<I>Beispiel</I> Eine Lösung von 229 Teilen 1,3;3-Tri_me- thyl-2-methylen-ss-naphthindo:lin in 500 Tei len Alkohol wird mit 41,6 Teilen, einer 38 %igen Lösung von Formaldehyd bei ge wöhnlicher Temperatur versetzt. Alsbald be ginnt die Temperatur zu steigen. Man rührt bei 30-35 , wobei sich ein weisser kristaJ- liner Niederschlag abscheidet. Nach einigen Stunden ist die Reaktion beendigt, und es hat sich ein dicker Brei gebildet.
Man kühlt ab, filtriert, wäscht das Reaktionsprodukt mit Alkohol aus und trocknet es im Vakuum bei 3:0-35 . Die Kondensation mit Formaldehyd kann auch ohne Verdünnüngs- bezw. Lo-- sungsmittel ausgeführt werden.
Process for the preparation of a formaldehyde condensation product. It has been found that the preparation of a formaldehyde condensation product is possible in a simple and smooth manner if 1 mol.
EMI0001.0012
can act.
The formed condensation product of the formula:
EMI0001.0015
@.; # eli; hea a for the manufacture of dyes. Is a suitable intermediate product, is soluble in the common solvents. When recrystallized from methyl alcohol, it forms white needles with a melting point of 220-225 and changes color in air to form a blue-violet basic dye.
<I> Example </I> A solution of 229 parts of 1,3; 3-tri_methyl-2-methylene-ss-naphthindo: lin in 500 parts of alcohol is mixed with 41.6 parts, a 38% solution of Formaldehyde added at ordinary temperature. 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.
It is cooled, filtered, the reaction product is washed with alcohol and dried in vacuo at 3: 0-35. The condensation with formaldehyde can also be carried out without diluting or Solvents are carried out.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH137944T | 1928-05-19 | ||
| CH136380T | 1928-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH137944A true CH137944A (en) | 1930-01-31 |
Family
ID=25712682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH137944D CH137944A (en) | 1928-05-19 | 1928-05-19 | Process for the preparation of a formaldehyde condensation product. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH137944A (en) |
-
1928
- 1928-05-19 CH CH137944D patent/CH137944A/en unknown
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