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A15207

Sigma-Aldrich

Acetylenedicarboxylic acid

95%

Synonym(s):

2-Butynedioic acid

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About This Item

Linear Formula:
HOOCC≡CCOOH
CAS Number:
142-45-0
Molecular Weight:
114.06
Beilstein:
878357
EC Number:
205-536-0
MDL number:
MFCD00004362
UNSPSC Code:
12352100
PubChem Substance ID:
24890553
NACRES:
NA.22

Assay

95%

form

crystals

mp

180-187 °C (dec.) (lit.)

storage temp.

2-8°C

SMILES string

OC(=O)C#CC(O)=O

InChI

1S/C4H2O4/c5-3(6)1-2-4(7)8/h(H,5,6)(H,7,8)

InChI key

YTIVTFGABIZHHX-UHFFFAOYSA-N

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Application

Acetylenedicarboxylic acid is generally used to synthesize its ester derivatives, dimethyl acetylenedicarboxylate (DMAD) and dimethyl acetylenedicarboxylate, which are useful precursors in organic synthesis.
Some of the common applications are listed below:
  • Acetylenedicarboxylic acid and its ester derivatives can undergo Cu(I)-catalyzed radical addition with acetophenones to yield furan derivatives.
  • It is one of the shortest linear links used in the preparation of Covalent Organic Frameworks (COFs) and Metal Organic Frameworks (MOFs) like IRMOF-0.
  • Various hexaarylbenzenes can be built via oxidative cyclodehydrogenation of diaryl alkynes derived from acetylenedicarboxylic acid.
  • It can be used as a spacer while synthesizing molecular chains or dendrimers such as 2,3,8-trifunctionalized indenoquinoxaline dendrons and bisarylacetylene chromophores.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301,H315,H319,H335

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

267.8 °F

Flash Point(C)

131 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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