DD255045A3 - PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE - Google Patents
PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE Download PDFInfo
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- DD255045A3 DD255045A3 DD27769385A DD27769385A DD255045A3 DD 255045 A3 DD255045 A3 DD 255045A3 DD 27769385 A DD27769385 A DD 27769385A DD 27769385 A DD27769385 A DD 27769385A DD 255045 A3 DD255045 A3 DD 255045A3
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- aca aca
- mole fractions
- μολβ
- phenylpropane
- cinnamaldehyde
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Das Verfahren zur Herstellung von Zimtaldehyd aus 1,1,3-Trichlor-3-Phenylpropan besteht darin, dass folgende Substanzen eine chemische Reaktion eingehen: 1 Molenbruch 1,1,3-Trichlor-3-Phenylpropan, 2-10 Molenbrueche Methanol oder Ethanol, 2-4 Molenbrueche Alkalimetallhydroxid und 1-20 Molenbrueche Wasser oder 4-20 Teile 20-50%iger waessriger Loesung von Alkalimetallhydroxid entweder gleichzeitig oder 1-2 Komponenten schrittweise zugegeben werden, wobei die gebildete Mischung bei 65-120C erhitzt und direkt oder nach Beseitigung der waessrigen Schicht mit einer anorganischen Saeure der p H-Wert auf 1-7 gebracht wird, die Mischung wird bis zum Sieden so lange erhitzt, bis Chlorwasserstoff entweicht und das gebildete Zimtaldehyd isoliert wird. Das Zimtaldehyd ist eine wichtige Komponente von Riechstoffen, die in der Kosmetikindustrie Anwendung finden.The process for the preparation of cinnamaldehyde from 1,1,3-trichloro-3-phenylpropane is that the following substances undergo a chemical reaction: 1 molar fraction of 1,1,3-trichloro-3-phenylpropane, 2-10 mole fractions of methanol or ethanol Add 2-4 mole fractions of alkali metal hydroxide and 1-20 mole fractions of water or 4-20 parts of 20-50% aqueous solution of alkali metal hydroxide either simultaneously or 1-2 components gradually, heating the resulting mixture at 65-120C and directly or after Elimination of the aqueous layer with an inorganic acid of p H value is brought to 1-7, the mixture is heated to boiling until hydrogen chloride escapes and the cinnamaldehyde formed is isolated. Cinnamon aldehyde is an important component of fragrances used in the cosmetics industry.
Description
4 G 07 C 47/232 4 G 07 C 47/232
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ΠρΗΜβρ 3ΠρΗΜβρ 3
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, opraHü^ecKHM cjioii OTflejiaKT μ THjiäfliiMM npw noHMÄeHHOM saBJieHnii naojinpyeTca 476 r (91% TeopHji) Kopn^Horo ajiBflerH^a c το^κοίί 127°C/2,1 KlIa η ^mctotom 96,0 %., ra ra K K K K K j j j fle fle fle fle fle fle TH TH TH TH TH ji ji ji ji ji TH 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 47 ίί ίί ίί.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS845411A CS240706B1 (en) | 1984-07-12 | 1984-07-12 | Method of cinnamaldehyde production |
Publications (1)
Publication Number | Publication Date |
---|---|
DD255045A3 true DD255045A3 (en) | 1988-03-23 |
Family
ID=5398960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD27769385A DD255045A3 (en) | 1984-07-12 | 1985-06-25 | PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE |
Country Status (4)
Country | Link |
---|---|
BG (1) | BG46524A1 (en) |
CS (1) | CS240706B1 (en) |
DD (1) | DD255045A3 (en) |
SU (1) | SU1451139A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6566557B2 (en) * | 2001-03-14 | 2003-05-20 | Council Of Scientific And Industrial Research | Process for the preparation of substituted trans-cinnamaldehyde, a natural yellow dye, from phenylpropane derivatives |
FR2822473B1 (en) * | 2001-03-23 | 2005-02-18 | Council Scient Ind Res | PROCESS FOR PREPARING SUBSTITUTED NATURAL TRANS-CINNAMALDEHYDE YELLOW DYE FROM PHENYLPROPANE DERIVATIVES |
-
1984
- 1984-07-12 CS CS845411A patent/CS240706B1/en unknown
-
1985
- 1985-06-25 DD DD27769385A patent/DD255045A3/en not_active IP Right Cessation
- 1985-06-25 BG BG7083985A patent/BG46524A1/en unknown
- 1985-07-03 SU SU857773898A patent/SU1451139A1/en active
Also Published As
Publication number | Publication date |
---|---|
CS541184A1 (en) | 1985-07-16 |
BG46524A1 (en) | 1990-01-15 |
CS240706B1 (en) | 1986-02-13 |
SU1451139A1 (en) | 1989-01-15 |
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