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738271 Sigma-Aldrich

3-Butynoic acid

95%

Synonym: 2-Ethynylacetic acid

  • CAS Number 2345-51-9

  • Empirical Formula (Hill Notation) C4H4O2

  • Molecular Weight 84.07

  •  NACRES NA.22

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Properties

Related Categories Alkynes, Building Blocks, Chemical Synthesis, Organic Building Blocks, Terminal More...
assay   95%
mp   70-80 °C
InChI   1S/C4H4O2/c1-2-3-4(5)6/h1H,3H2,(H,5,6)
InChI key   KKAHGSQLSTUDAV-UHFFFAOYSA-N

Description

Application

Some of the applications of 3-butynoic acid are:
• Synthesis of functionalized γ-butyrolactones and tetrahydrofurans via Conia-ene cyclizations.
• Synthesis of allenoates for [2+2] cycloadditions with alkenes.
• Phosphine-catalyzed synthesis of highly functionalized coumarins.
• Synthesis of various useful organotin reagents via radical hydrostannation of 3-butynoic acid.

Packaging

1 g in glass bottle

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 2923 6.1(8) / PGII
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Meet Synthia - Retrosynthesis Sofware
Protocols & Articles
Peer-Reviewed Papers
15

References

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