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Propargyl alcohol is a solvent stabilizer that is useful as an intermediate in organic synthesis, an electroplating brightener additive. It is useful 3-carbon fragment in acetylene coupling reactions, It undergoes Pd-catalyzed O-coupling with alcohols to give the corresponding 1-methoxyallyl ethers.
Yuji Kozawa; Miwako Mori. Synthesis of different ring-size heterocycles from the same propargyl alcohol derivative by ligand effect on Pd(0). Tetrahedron Letters. 2002, 43 1499-1502.
Useful 3-carbon fragment in acetylene coupling reactions. The hydroxyl group can be protected as its THP ether; see, e.g.: Org. Synth., 76, 178 (1998), or 1-ethoxyethyl ether (see Ethyl vinyl ether, A15691): Org. Synth., 76, 199 (1998). C-Alkylation can also be accomplished without O-protection by using 2 equivalents of base (LiNH2); see, e.g., J. Chem. Soc., Perkin 1, 85 (1988); Org. Synth. Coll., 8, 415 (1993).
O-methylation, followed by treatment with t-BuOK affords methoxyallene, a valuable reactive intermediate. It undergoes Pd-catalyzed O-coupling with alcohols to give the corresponding 1-methoxyallyl ethers: Synlett, 192 (1998). Lithiation leads to 1-lithio-1-methoxyallene: J. Org. Chem., 50, 5308 (1985); 58, 6377 (1993). For a brief feature on methoxyallene with further examples, see: Synlett, 1697 (2000).
Gefahrenhinweise (EU): H226-H301-H311-H331-H314
Flammable liquid and vapour. Toxic if swallowed. Toxic in contact with skin. Toxic if inhaled. Causes severe skin burns and eye damage.
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF SWALLOWED: IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.