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MilliporeSigma

232211

Sigma-Aldrich

4-Pentynoic acid

95%

Sinónimos:

Propargylacetic acid

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About This Item

Fórmula lineal:
CH≡CCH2CH2COOH
Número de CAS:
Peso molecular:
98.10
Beilstein/REAXYS Number:
1742047
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

95%

form

solid

bp

110 °C/30 mmHg (lit.)

mp

54-57 °C (lit.)

storage temp.

2-8°C

SMILES string

OC(=O)CCC#C

InChI

1S/C5H6O2/c1-2-3-4-5(6)7/h1H,3-4H2,(H,6,7)

InChI key

MLBYLEUJXUBIJJ-UHFFFAOYSA-N

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General description

4-Pentynoic acid undergoes copper-catalyzed intramolecular cyclizations to form enol lactones. It also reacts with 1-bromo-1-alkynes in the presence of a Pd catalyst to yield biologically active ynenol lactones.

Application

4-Pentynoic acid was used:
  • as building block for the synthesis of library of eight sequence-defined model oligomers
  • in one-pot synthesis of the complex polycyclic heterocycles benzo[4,5]imidazo[1,2-c]pyrrolo[1,2-a]quinazolinone derivatives
  • in the synthesis of various allenenols lactones [5(E)-(2-allenylidene)-tetrahydro-2-furanones]
  • in the synthesis of a cyctotoxic macrolide by ring-closing metathesis of a bis acetylene

pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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Artículos

Click chemistry, and the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) in particular, is a powerful new synthetic tool in polymer chemistry and material science.

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