Basic information Description Safety Supplier Related
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2-Acetyl pyrrole

Basic information Description Safety Supplier Related

2-Acetyl pyrrole Basic information

Product Name:
2-Acetyl pyrrole
Synonyms:
  • (2-Pyrrolyl)ethanone
  • 1-(2-Pyrrolyl)-1-ethanone
  • 2-Acetyl-1H-pyrrole
  • 2-Acetylpyrrole ,98%
  • Methyl(1H-pyrrol-2-yl) ketone
  • 2-Acetylpyrrole,99%
  • 2-Acetylpyrrole, Methyl 2-pyrrolyl ketone
  • 1-(1H-Pyrrol-2-yl)ethan-1-one , tech
CAS:
1072-83-9
MF:
C6H7NO
MW:
109.13
EINECS:
214-016-2
Product Categories:
  • Flavor
  • API intermediates
  • Imidazoles, Pyrroles, Pyrazoles, Pyrrolidines
  • Benzenes
  • ketone
  • pyrrole
Mol File:
1072-83-9.mol
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2-Acetyl pyrrole Chemical Properties

Melting point:
88-93 °C (lit.)
Boiling point:
220 °C (lit.)
Density 
1.1143 (rough estimate)
refractive index 
1.5040 (estimate)
FEMA 
3202 | METHYL 2-PYRROLYL KETONE
Flash point:
220°C
storage temp. 
Sealed in dry,Room Temperature
form 
Crystalline Powder
pka
14.86±0.50(Predicted)
color 
White to beige
Odor
roasted odor
Odor Type
musty
JECFA Number
1307
BRN 
1882
LogP
0.93
CAS DataBase Reference
1072-83-9(CAS DataBase Reference)
NIST Chemistry Reference
Ethanone, 1-(1H-pyrrol-2-yl)-(1072-83-9)
EPA Substance Registry System
2-Acetylpyrrole (1072-83-9)
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Safety Information

Hazard Codes 
Xn,Xi
Risk Statements 
22-37/38-36/37/38
Safety Statements 
37/39-26-24/25-36
WGK Germany 
3
RTECS 
OB5970000
Hazard Note 
Harmful
TSCA 
Yes
HS Code 
29339990

MSDS

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2-Acetyl pyrrole Usage And Synthesis

Description

2-acetyl pyrrole is a colorless or yellow liquid. It occurs naturally in cereals and cereal product and has an odor reminiscent of walnut, licorice, baked bread, baked hazelnut, and fish. It is used as a food additive, such as in cocoa, rum, brandy, caramel.

Description

Methyl 2-pyrrolyl ketone is like bread, walnut, licorice. May be prepared from pyrryl magnesium iodide and acetyl chloride; a volatile flavor component in roasted filberts.

Chemical Properties

Methyl-2-pyrrolyl ketone has an odor reminiscent of bread, walnut and licorice

Chemical Properties

white to beige crystalline powder

Occurrence

Reported found in essential oils of tobacco leaves, apple, asparagus, onion, baked and fried potato, roasted almonds, wheat bread, cooked chicken, cooked beef and pork, beer, malt whiskey, cocoa, coffee, tea, roasted filberts, and peanuts, peanut butter, potato chips, soybean, coconut, mushrooms, almond, mango, licorice, sweet corn, malt, wort, dried bonito, Bourbon vanilla, chicory root, okra, crab, scallop and clam.

Uses

2-Acetylpyrrole has been used in the synthesis of 2-acetyl-1-pyrroline.

Uses

hepatoprotectant, organoleptic

Definition

ChEBI: A pyrrole carrying an acetyl substituent at the 2-position.

Preparation

From pyrrole magnesium iodide and acetyl chloride; a volatile flavor component in roasted filberts

Synthesis Reference(s)

The Journal of Organic Chemistry, 48, p. 3214, 1983 DOI: 10.1021/jo00167a014
Tetrahedron Letters, 26, p. 4649, 1985 DOI: 10.1016/S0040-4039(00)98776-8

General Description

2-Acetylpyrrole undergoes alkylation reaction with alkyl iodide in benzene/solid KOH system in the presence of 18-crown-6 to yield the corresponding 1-alkyl derivative.

2-Acetyl pyrrole Preparation Products And Raw materials

Preparation Products

Raw materials

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