Product Name

  • Name

    Malonaldehyde bis(diethyl acetal)

  • EINECS 204-533-1
  • CAS No. 122-31-6
  • Article Data30
  • CAS DataBase
  • Density 0.932 g/cm3
  • Solubility insoluble in water
  • Melting Point -90 °C
  • Formula C11H24O4
  • Boiling Point 220 °C at 760 mmHg
  • Molecular Weight 220.309
  • Flash Point 42.2 °C
  • Transport Information
  • Appearance clear colourless to yellow liquid
  • Safety 36/37/39-26
  • Risk Codes 22
  • Molecular Structure Molecular Structure of 122-31-6 (Malonaldehyde bis(diethyl acetal))
  • Hazard Symbols HarmfulXn
  • Synonyms Malonaldehyde,bis(diethyl acetal) (6CI,7CI,8CI);1,1,3,3-Tetrakis(ethoxy)propane;Malonaldehyde tetraethyl acetal;Malonaldehyde tetraethyl diacetal;NSC 17068;Tetraethyl malondialdehyde acetal;Malonaldehyde bis(diethyl acetal);
  • PSA 36.92000
  • LogP 2.17470

Synthetic route

ethyl vinyl ether
109-92-2

ethyl vinyl ether

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
Stage #1: ethyl vinyl ether; orthoformic acid triethyl ester With boron trifluoride diethyl etherate at 20 - 38℃;
Stage #2: With potassium carbonate at 20℃; for 2h;
69.2%
With iron(III) chloride
With boron fluoride ether
vinyl isopropyl ether
926-65-8

vinyl isopropyl ether

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

1,3,3-triethoxy-1-(isopropoxy)propane
603151-68-4

1,3,3-triethoxy-1-(isopropoxy)propane

Conditions
ConditionsYield
iron(III) chloride at -30℃; for 6h; Product distribution / selectivity;A 6.5%
B 42%
iron(III) chloride at 0℃; for 6h; Product distribution / selectivity;A 13.6%
B 27%
trimethylsiloxyethene
6213-94-1

trimethylsiloxyethene

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
With zinc(II) chloride In ethyl acetate for 3h; Ambient temperature;76.5%
ethyl vinyl ether
109-92-2

ethyl vinyl ether

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

1,1,3,5,5-pentaethoxy-pentane
5870-87-1

1,1,3,5,5-pentaethoxy-pentane

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In diethyl ether at 10℃;A 64%
B 17%
ethanol
64-17-5

ethanol

3.3-diethoxy-propionaldehyde imidechloro stannate

3.3-diethoxy-propionaldehyde imidechloro stannate

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
at 45℃;
vinyl acetate
108-05-4

vinyl acetate

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
With iron(III) chloride; sodium hydrogencarbonate 1) 2 h, reflux; 2) 20 deg C, 2 h;56%
at 80℃; beim Erwaermen in Gegenwart von Katalysatoren (z.B. FeCl3, AlCl3, SnCl2, SnCl4, ZnCl2, HgCl2);
2-ethoxy-1,3-dioxane
76508-46-8

2-ethoxy-1,3-dioxane

ethyl vinyl ether
109-92-2

ethyl vinyl ether

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

di(1,3-dioxan-2-yl)methane
30963-84-9

di(1,3-dioxan-2-yl)methane

C

2-(2,2-diethoxyethyl)-1,3-dioxane
86444-87-3

2-(2,2-diethoxyethyl)-1,3-dioxane

Conditions
ConditionsYield
zinc(II) chloride In diethyl ether temperature below 30 deg C;A n/a
B n/a
C 35%
vinyl acetate
108-05-4

vinyl acetate

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

acetic acid-(1,3,3-triethoxy-propyl ester)
91243-91-3

acetic acid-(1,3,3-triethoxy-propyl ester)

C

1,3-diacetoxy-1,3-diethoxypropane
21633-62-5

1,3-diacetoxy-1,3-diethoxypropane

Conditions
ConditionsYield
With p-benzoquinone at 30℃; for 24h;
2-Ethoxy-5,5-dimethyl-1,3-dioxane
5783-79-9

2-Ethoxy-5,5-dimethyl-1,3-dioxane

ethyl vinyl ether
109-92-2

ethyl vinyl ether

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

bis(5,5-dimethyl-1,3-dioxan-2-yl)-methane
30859-70-2

bis(5,5-dimethyl-1,3-dioxan-2-yl)-methane

C

2-(2,2-diethoxyethyl)-5,5-dimethyl-1,3-dioxane
86444-88-4

2-(2,2-diethoxyethyl)-5,5-dimethyl-1,3-dioxane

Conditions
ConditionsYield
zinc(II) chloride In diethyl ether temperature below 30 deg C;
(E)-3-Ureido-but-2-enoic acid ethyl ester
5435-44-9, 22243-66-9

(E)-3-Ureido-but-2-enoic acid ethyl ester

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

acetylene
74-86-2

acetylene

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

1,1-diethoxypropane
4744-08-5

1,1-diethoxypropane

C

1,1,4,4-tetraethoxy-2-butyne
3975-08-4

1,1,4,4-tetraethoxy-2-butyne

Conditions
ConditionsYield
under 8826.09 - 12503.6 Torr;
at 170℃; under 8826.09 - 12503.6 Torr;
ethanol
64-17-5

ethanol

cyclohexa-1,4-diene
1165952-92-0

cyclohexa-1,4-diene

A

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

B

ethyl 3,3-diethoxypropanoate
10601-80-6

ethyl 3,3-diethoxypropanoate

C

diethyl malonate
105-53-3

diethyl malonate

Conditions
ConditionsYield
With hydrogenchloride; ozone -40 deg C, then ca. 30 min reflux;A n/a
B 70%
C n/a
With hydrogenchloride; ozone -40 deg C, then ca. 30 min reflux;A 70%
B 70%
C n/a
With hydrogenchloride; ozone at -40℃; Product distribution;A n/a
B 70%
C n/a
2-bromo-1,1,3-triethoxy-propane
6630-39-3

2-bromo-1,1,3-triethoxy-propane

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: ethanolic KOH-solution
2: hydrogen chloride
View Scheme
orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: boron trifluoride; mercury(II) diacetate
2: iron(III) chloride
View Scheme
1,1-dichloro-3,3-diethoxy-propane
42084-63-9

1,1-dichloro-3,3-diethoxy-propane

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: NaOEt
View Scheme
1-chloro-3,3-diethoxy-propene
14112-65-3

1-chloro-3,3-diethoxy-propene

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: ion-exchange resin + form>
2: Na
View Scheme
1,3,3-triethoxypropene
5444-80-4

1,3,3-triethoxypropene

ethanol
64-17-5

ethanol

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
With hydrogenchloride
ethanol
64-17-5

ethanol

acetic acid-(1,3,3-triethoxy-propyl ester)
91243-91-3

acetic acid-(1,3,3-triethoxy-propyl ester)

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
With iron(III) chloride
ethanol
64-17-5

ethanol

malonaldehyde diethylacetal-imine; chloro stannate

malonaldehyde diethylacetal-imine; chloro stannate

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
at 45℃;
ethanol
64-17-5

ethanol

3,3-diethoxypropanal
6367-37-9

3,3-diethoxypropanal

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
With hydrogenchloride
ethanol
64-17-5

ethanol

3-chloro-1,3-diethoxy-propene
20760-42-3

3-chloro-1,3-diethoxy-propene

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
With sodium
Propargylic aldehyde
624-67-9

Propargylic aldehyde

ethanol
64-17-5

ethanol

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

Conditions
ConditionsYield
(i) N-methylpiperidine, (ii) HCl; Multistep reaction;
ethanol
64-17-5

ethanol

1-chloro-3,3-diethoxy-propene
14112-65-3

1-chloro-3,3-diethoxy-propene

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

ethanol
64-17-5

ethanol

3-phenoxy-propenal
2862-47-7

3-phenoxy-propenal

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

vinyl acetate
108-05-4

vinyl acetate

iron(III) chloride
7705-08-0

iron(III) chloride

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

iron(III) chloride
7705-08-0

iron(III) chloride

ethyl vinyl ether
109-92-2

ethyl vinyl ether

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

trans-ethyl 4-hydrazinylcyclohexane-1-carboxylate hydrochloride

trans-ethyl 4-hydrazinylcyclohexane-1-carboxylate hydrochloride

trans-4-pyrazol-1-yl-cyclohexanecarboxylic acid ethyl ester

trans-4-pyrazol-1-yl-cyclohexanecarboxylic acid ethyl ester

Conditions
ConditionsYield
In ethanol for 2h; Reflux;100%
Stage #1: malondialdehyde bis(diethyl acetal); trans-ethyl 4-hydrazinylcyclohexane-1-carboxylate hydrochloride In ethanol Reflux;
Stage #2: With sodium hydrogencarbonate In ethanol; water
100%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

(S)-4-Benzyl-2-oxazolidinone
90719-32-7

(S)-4-Benzyl-2-oxazolidinone

(S,E)-3-(4-benzyl-2-oxooxazolidin-3-yl)acrylaldehyde

(S,E)-3-(4-benzyl-2-oxooxazolidin-3-yl)acrylaldehyde

Conditions
ConditionsYield
With sulfuric acid In chloroform diastereoselective reaction;99%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

1,3-dichloro-1,3-diethoxypropane
50840-17-0

1,3-dichloro-1,3-diethoxypropane

Conditions
ConditionsYield
With phosphorus trichloride at 50℃; for 6h;98.5%
With tetrachloromethane; phosphorus pentachloride
With pyridine; tetrachloromethane; thionyl chloride
With phosphorus pentachloride; trichlorophosphate
(S)-4-(3,4-dimethoxybenzyl)oxazolidin-2-one
142763-11-9

(S)-4-(3,4-dimethoxybenzyl)oxazolidin-2-one

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

(5R,10aS)-5-{[(5R,10aS)-7,8-dimethoxy-3-oxo-1,5,10,10a-tetrahydro[1,3]oxazolo[3,4-b]isoquinolin-5-yl]methyl}-7,8-dimethoxy-1,5,10,10a-tetrahydro[1,3]oxazolo[3,4-b]isoquinolin-3-one

(5R,10aS)-5-{[(5R,10aS)-7,8-dimethoxy-3-oxo-1,5,10,10a-tetrahydro[1,3]oxazolo[3,4-b]isoquinolin-5-yl]methyl}-7,8-dimethoxy-1,5,10,10a-tetrahydro[1,3]oxazolo[3,4-b]isoquinolin-3-one

Conditions
ConditionsYield
With sulfuric acid In chloroform at 20℃; for 12h; Pictet-Spengler Synthesis; diastereoselective reaction;98%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

2,6-diamino-3H-pyrimidin-4-one
100643-27-4, 143504-99-8

2,6-diamino-3H-pyrimidin-4-one

C11H12N8O2
142168-84-1

C11H12N8O2

Conditions
ConditionsYield
With acetic acid for 3.5h; Heating;97%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

3-hexyl-2-methylbenzo[d]thiazol-3-ium iodide

3-hexyl-2-methylbenzo[d]thiazol-3-ium iodide

2-<5-(3-hexyl-2-benzothiazolylidene)-1,3-pentadienyl>-3-nonylbenzothiazolium iodide

2-<5-(3-hexyl-2-benzothiazolylidene)-1,3-pentadienyl>-3-nonylbenzothiazolium iodide

Conditions
ConditionsYield
With pyridine for 2h; Heating;96%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

1.3-butanediol
18826-95-4, 107-88-0

1.3-butanediol

bis(4-methyl-1,3-dioxan-2-yl)methane
71172-96-8

bis(4-methyl-1,3-dioxan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation exchange resin In benzene at 120 - 130℃; heating until alcohol liberation was complete;95%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

3-nonyl-2-methylbenzothiazolium iodide

3-nonyl-2-methylbenzothiazolium iodide

2-<5-(3-nonyl-2-benzothiazolylidene)-1,3-pentadienyl>-3-nonylbenzothiazolium iodide

2-<5-(3-nonyl-2-benzothiazolylidene)-1,3-pentadienyl>-3-nonylbenzothiazolium iodide

Conditions
ConditionsYield
With pyridine for 2h; Heating;95%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

1-bromo-2-ethoxyethene
18519-95-4

1-bromo-2-ethoxyethene

2-bromo-1,1,3,5,5-pentaethoxy-pentane
25798-89-4

2-bromo-1,1,3,5,5-pentaethoxy-pentane

Conditions
ConditionsYield
With zinc(II) chloride In ethyl acetate for 5.5h; Ambient temperature;94%
With boron trifluoride diethyl etherate
2-methyl-2,4-pentanediol
107-41-5

2-methyl-2,4-pentanediol

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

bis(4,4,6-trimethyl-1,3-dioxan-2-yl)methane
86444-86-2

bis(4,4,6-trimethyl-1,3-dioxan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin at 110 - 120℃; heating until alcohol liberation was complete;94%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

2,2-Dimethyl-1,3-propanediol
126-30-7

2,2-Dimethyl-1,3-propanediol

bis(5,5-dimethyl-1,3-dioxan-2-yl)-methane
30859-70-2

bis(5,5-dimethyl-1,3-dioxan-2-yl)-methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin at 110 - 120℃; heating until alcohol liberation was complete;94%
3-methyl-butane-1,3-diol
2568-33-4

3-methyl-butane-1,3-diol

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

bis(4,4-dimethyl-1,3-dioxan-2-yl)methane
86444-85-1

bis(4,4-dimethyl-1,3-dioxan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin In benzene at 120 - 130℃; heating until alcohol liberation was complete;93%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

propylene glycol
57-55-6

propylene glycol

bis(4-methyl-1,3-dioxolan-2-yl)methane
1599-50-4

bis(4-methyl-1,3-dioxolan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin at 110 - 120℃; heating until alcohol liberation was complete;93%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

2-Thiobarbituric acid
91759-32-9

2-Thiobarbituric acid

5-<3-(6-hydroxy-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl)prop-2-enylidene>-2-thioxo-2,3-dihydropyrimidine-4,6(1H,5H)-dione

5-<3-(6-hydroxy-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrimidin-5-yl)prop-2-enylidene>-2-thioxo-2,3-dihydropyrimidine-4,6(1H,5H)-dione

Conditions
ConditionsYield
With hydrogenchloride for 1.5h; Heating;93%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

4-nitro-2H-pyrazol-3-ylamine hydrochloride

4-nitro-2H-pyrazol-3-ylamine hydrochloride

3-nitro-pyrazolo[1,5-a]pyrimidine
55405-64-6

3-nitro-pyrazolo[1,5-a]pyrimidine

Conditions
ConditionsYield
With acetic acid92.5%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

ethylene glycol
107-21-1

ethylene glycol

di(1,3-dioxolan-2-yl)methane
4405-17-8

di(1,3-dioxolan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin at 110 - 120℃; heating until alcohol liberation was complete;92%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

2.3-butanediol
513-85-9

2.3-butanediol

bis(4,5-dimethyl-1,3-dioxolan-2-yl)methane
32465-54-6

bis(4,5-dimethyl-1,3-dioxolan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin at 110 - 120℃; heating until alcohol liberation was complete;91%
potassium tetrachloroplatinate

potassium tetrachloroplatinate

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

[(dibenzo[b,i]-1,4,8,11-tetraaza[14]annulene)platinum(II)]
77624-36-3

[(dibenzo[b,i]-1,4,8,11-tetraaza[14]annulene)platinum(II)]

Conditions
ConditionsYield
With CH3COOH; NaCH3COO In ethanol; water complex reacted with o-phenylenediamine at 60°C in aq. EtOH for 30 min, AcOH and tetraethoxypropane added, mixt. refluxed for 2 h, NaOAcadded, refluxed for 16 h; ppt. filtered while hot, washed with H2O, EtOH, ether, sublimated in vac. at 300°C, 0.01 Torr.;91%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

4-(trifluoromethyl)phenylhydrazine hydrochloride
2923-56-0

4-(trifluoromethyl)phenylhydrazine hydrochloride

1-(4-trifluoromethyl-phenyl)-1H-pyrazole
207797-05-5

1-(4-trifluoromethyl-phenyl)-1H-pyrazole

Conditions
ConditionsYield
With hydrogenchloride In ethanol at 75℃; for 2h;91%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

2,3-dimethyl-2,3-butane diol
76-09-5

2,3-dimethyl-2,3-butane diol

1,3-bis(4',4',5',5'-tetramethyl-1,3-dioxolan-2-yl)methane
86444-84-0

1,3-bis(4',4',5',5'-tetramethyl-1,3-dioxolan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin In benzene at 120 - 130℃; heating until alcohol liberation was complete;90%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

3,5-dimethylaminoaniline
108-69-0

3,5-dimethylaminoaniline

N-<3-(3,5-Dimethylphenylimino)-1-propenyl>-3,5-dimethylanilin-Hydrogenperchlorat

N-<3-(3,5-Dimethylphenylimino)-1-propenyl>-3,5-dimethylanilin-Hydrogenperchlorat

Conditions
ConditionsYield
With perchloric acid In ethanol for 2h; Heating;90%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

trimethyleneglycol
504-63-2

trimethyleneglycol

di(1,3-dioxan-2-yl)methane
30963-84-9

di(1,3-dioxan-2-yl)methane

Conditions
ConditionsYield
With KU-2-8 cation-exchange resin In benzene at 120 - 130℃; heating until alcohol liberation was complete;89%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

aniline hydrochloride
142-04-1

aniline hydrochloride

phenyl[3-phenylaminoprop-2-en-1-ylidene]ammonium chloride
23769-16-6, 28140-60-5, 50328-50-2, 58467-94-0, 125367-88-6

phenyl[3-phenylaminoprop-2-en-1-ylidene]ammonium chloride

Conditions
ConditionsYield
In methanol Heating; Reflux;89%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

2-(trifluoromethyl)phenylhydrazine hydrochloride
3107-34-4

2-(trifluoromethyl)phenylhydrazine hydrochloride

1-(2-(trifluoromethyl)phenyl)-1H-pyrazole
84401-17-2

1-(2-(trifluoromethyl)phenyl)-1H-pyrazole

Conditions
ConditionsYield
With hydrogenchloride In ethanol at 75℃; for 2h;88%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

3-Chloro-6-hydrazinopyridazine
17284-97-8

3-Chloro-6-hydrazinopyridazine

3-chloro-6-(1H-pyrazol-1-yl)pyridazine
29334-66-5

3-chloro-6-(1H-pyrazol-1-yl)pyridazine

Conditions
ConditionsYield
With acetic acid In ethanol for 3h; Reflux;86%
2-aminopyridine
504-29-0

2-aminopyridine

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

pyrido[1,2-a]pyrimidinium perchlorate

pyrido[1,2-a]pyrimidinium perchlorate

Conditions
ConditionsYield
With perchloric acid In ethanol at 80℃; Inert atmosphere;86%
2-amino-3-hydroxypyridine
16867-03-1

2-amino-3-hydroxypyridine

malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

9-hydroxy-pyrido<1,2-a>pyrimidin-5-ium perchlorate

9-hydroxy-pyrido<1,2-a>pyrimidin-5-ium perchlorate

Conditions
ConditionsYield
With perchloric acid In ethanol at 80℃; for 12h; Inert atmosphere;85%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

phenylhydrazine hydrochloride
59-88-1

phenylhydrazine hydrochloride

1-phenylpyrazole
1126-00-7

1-phenylpyrazole

Conditions
ConditionsYield
With hydrogenchloride In ethanol at 75℃; for 2h;84%
With ethanol
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

5-amino-3-methyl-N-phenylpyrazole-4-carboxamide
96319-19-6

5-amino-3-methyl-N-phenylpyrazole-4-carboxamide

2-methyl-N-phenylpyrazolo<1,5-a>pyrimidine-3-carboxamide
96319-20-9

2-methyl-N-phenylpyrazolo<1,5-a>pyrimidine-3-carboxamide

Conditions
ConditionsYield
With hydrogenchloride In ethanol at 60 - 80℃; for 2h;84%
malondialdehyde bis(diethyl acetal)
122-31-6

malondialdehyde bis(diethyl acetal)

3‐cyclopropyl‐4‐thiocyanato‐1H‐pyrazol‐5‐amine

3‐cyclopropyl‐4‐thiocyanato‐1H‐pyrazol‐5‐amine

2‐cyclopropyl‐3‐thiocyanatopyrazolo[1,5‐a]pyrimidine

2‐cyclopropyl‐3‐thiocyanatopyrazolo[1,5‐a]pyrimidine

Conditions
ConditionsYield
With hydrogenchloride In water for 24h;84%
With hydrogenchloride In ethanol; water for 24h;

Malonaldehyde bis(diethyl acetal) Chemical Properties

Product Name: Malonaldehyde bis(diethyl acetal) (CAS NO.122-31-6)

Molecular Formula: C11H24O4
Molecular Weight: 220.31g/mol
Melting Point: -90 °C
Boiling point: 220 °C at 760 mmHg
Storage Temperature: 2-8°C
Flash Point: 42.2 °C
Density: 0.932 g/cm3
Refractive index: n20/D 1.411(lit.)
Water Solubility: insoluble
Index of Refraction: 1.42 
Molar Refractivity: 59.9 cm3 
Molar Volume: 236.3 cm3
Surface Tension: 27.9 dyne/cm
Enthalpy of Vaporization: 43.78 kJ/mol
Vapour Pressure: 0.171 mmHg at 25°C
XLogP3-AA: 1.8
H-Bond Donor: 0
H-Bond Acceptor: 4
Structure Descriptors of Malonaldehyde bis(diethyl acetal) (CAS NO.122-31-6):
  IUPAC Name: Malonaldehyde bis(diethyl acetal)
  Canonical SMILES: CCOC(CC(OCC)OCC)OCC
  InChI: InChI=1S/C11H24O4/c1-5-12-10(13-6-2)9-11(14-7-3)15-8-4/h10-11H,5-9H2,1-4H3 
  InChIKey: KVJHGPAAOUGYJX-UHFFFAOYSA-N
Classification Code: tion data;  Skin / Eye Irritant

Malonaldehyde bis(diethyl acetal) Uses

 Malonaldehyde bis(diethyl acetal) (CAS NO.122-31-6) is used as a medicine and dye intermediates, can be used as preservatives in intermediate agricultural products.

Malonaldehyde bis(diethyl acetal) Toxicity Data With Reference

1.    

skn-rbt 500 mg/24H MLD

    85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,262.
2.    

eye-rbt 500 mg

    AMIHBC    AMA Archives of Industrial Hygiene and Occupational Medicine. 4 (1951),119.
3.    

mmo-sat 4 µmol/plate

    CNREA8    Cancer Research. 40 (1980),276.
4.    

orl-rat LD50:1610 mg/kg

    TXAPA9    Toxicology and Applied Pharmacology. 7 (1965),826.
5.    

ipr-mus LD50:200 mg/kg

    NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) No. AD277-689 .

Malonaldehyde bis(diethyl acetal) Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. Mutation data reported. An eye irritant. Flammable when exposed to heat or flame; can react with oxidizing materials. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.
Safety information of Malonaldehyde bis(diethyl acetal) (CAS NO.122-31-6):
Hazard Codes: Xn
Risk Statements: 22
R22: Harmful if swallowed
Safety Statements: 36/37/39-26
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
RIDADR: 1993
WGK Germany: 3
RTECS: ON8750000
HazardClass: 3.2
PackingGroup: III
HS Code: 29110000

Malonaldehyde bis(diethyl acetal) Specification

 Malonaldehyde bis(diethyl acetal) , its CAS NO. is 122-31-6, the synonyms are  Malonaldehyde diethyl acetal ; Malonaldehyde tetraethyl acetal ; Malonaldehyde tetraethyl diacetal ; Malondialdehyde tetraethylacetal ; Malonaldehyde bis(diethyl acetal) ; Propane, 1,1,3,3-tetraethoxy- ; Tetraethoxy propane ; Tetraethoxypropane ; Tetraethyl malondialdehyde acetal . Malonaldehyde bis(diethyl acetal) (CAS NO.122-31-6) is stable under normal temperatures and pressures but incompatible with strong oxidizing agents, strong acids.Hazardous decomposition products are carbon monoxide, carbon dioxide.Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.

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