DD255045A3 - PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE - Google Patents

PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE Download PDF

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Publication number
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
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DD
German Democratic Republic
Prior art keywords
aca aca
mole fractions
μολβ
phenylpropane
cinnamaldehyde
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DD27769385A
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German (de)
Inventor
Milan Hajek
Jaroslav Malek
Premysl Silhary
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Ceskoslovenska Akademie Ved
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Publication of DD255045A3 publication Critical patent/DD255045A3/en

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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

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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)

Φ O P M y Λ Ä H30BPETEHMHΦ O P M y Λ H H30BPETEHMH Cnocoö npon3BOÄCTBa KopiwHoro ajiBÄerMÄa ns 1,1,3-Cnocoö npon3BOÄCTBa KopiwHoro ajiBÄerMÄa ns 1,1,3- Τρΐ1ΧΛθρ-3-φθΗΜΛΠρθΠ8Η8, COCTOHII}Hfi B TOM, tJTO B X KMETOeCKy 3D pea KIJHB BCTynaiOT 1 Αθ·ΠΑ MOJIb. 1,1,3-τρΗΧΛ0ρ-3-φθΗΗΛΠρ0Π3Η8,Τρΐ1ΧΛθρ-3-φθΗΜΛΠρθΠ8Η8, COCTOHII} Hfi B TOM, tJTO B X KMETOeCKy 3D pea KIJHB BCTynaiOT 1 Αθ · ΠΑ MOJIb. 1,1,3-τρΗΧΛ0ρ-3-φθΗΗΛΠρ0Π3Η8, 2-10 ROJieii Moab. MeTaHOJia hjtm 3TaH0jra, S-4 sojim μολβ. raspooKMcn mejtotiHoro MeTajiJia n 1-20 ,nojieä μολβ. bo,d;bi mjim 4-20 flOJieM 20-50%· βο^ηογο pacTBopa rnflpooKHCH μλμ οληοβρθμθηηο, hjim 1-2 κομποηθητη2-10 ROJieii Moab. MeTaHOJia hjtm 3TaH0jra, S-4 sojim μολβ. raspooKMcn mejtotiHoro MeTajiJia n 1-20, nojieä μολβ. bo, d; bi mjim 4-20 flOJieM 20-50% · βο ^ ηογο pacTBopa rnflpooKHCH μλμ οληοβρθμθηηο, hjim 1-2 κομποηθητη ποοτβπβΗΗΟ, npn^ieM o6pa3OBaBmaacfl CMecB parpeBaeTca npwποοββπβΗΗΟ, npn ^ ieM o6pa3OBaBmaacfl CMecB parpeBaeTca npw TeMnepaType 65-12O0C κ npasio, mh noCvie οτ^θλθημη βο^ηογο ΟΛΟΗ HeOrpaHH^eCKOM KHGJIOTOii pH flOBOflHTCfl flOTeMnepaType 65-12O 0 C κ npasio, mh noCvie οτ ^ θλθημη βο ^ ηογο ΟΛΟΗ HeOrpaHH ^ eCKOM KHGJIOTOii pH flOBOflHTCfl flO 1-7, CMecB HarpeBaeTCfl #o κμπθηιιη ^o τβχ nop, noKa bhxjropncTHM ΒΟ^ορο,π; μ o6pa3OBaBmnäCfl M30jiHpyeTCfl.1-7, CMecB HarpeBaeTCfl #o κμπθηιιη ^ o τβχnop, noKa bhxjropncTHM ΒΟ ^ ορο, π; μ o6pa3OBaBmnäCfl M30jiHpyeTCfl.
DD27769385A 1984-07-12 1985-06-25 PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE DD255045A3 (en)

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

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DD27769385A DD255045A3 (en) 1984-07-12 1985-06-25 PROCESS FOR THE PREPARATION OF CINNAMENTALDEHYDE

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BG (1) BG46524A1 (en)
CS (1) CS240706B1 (en)
DD (1) DD255045A3 (en)
SU (1) SU1451139A1 (en)

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* Cited by examiner, † Cited by third party
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

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CS541184A1 (en) 1985-07-16
BG46524A1 (en) 1990-01-15
CS240706B1 (en) 1986-02-13
SU1451139A1 (en) 1989-01-15

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