2-Ethynyl-naphthalene

CAS NO.：2949-26-0
Empirical Formula: C12H8
Molecular Weight: 152.19
MDL number: MFCD00870424
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:22:54

What is 2-Ethynyl-naphthalene?

Synthesis

Tetrabutylammonium fluoride (2.9 mL, 2.87 mmol, ca 1.0 M en THF) was added to a stirred solution of trimethyl(3-(naphth-2-yl)ethynyl)silane (534 mg, 2.39 mmol) in dry THF (25 mL), under argon. After stirring for 1 h, the reaction mixture was diluted with ethyl acetate and HCl (10%). The organic layer was separated, and the aqueous layer was extracted with ethyl acetate (x2). All the combined organic extracts were dried (anh. Na2SO4), filtered and concentrated under reduced pressure. The residue was further purified by flash chromatography eluting with hexane to yield 2-Ethynyl-naphthalene (354 mg, 98%) as a colourless oil.

Properties of 2-Ethynyl-naphthalene

Melting point:	40.0 to 44.0 °C
Boiling point:	110°C/1mmHg(lit.)
Density	1.07±0.1 g/cm3(Predicted)
storage temp.	2-8°C
form	powder to crystal
color	White to Yellow to Orange

Safety information for 2-Ethynyl-naphthalene

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
Precautionary Statement Codes	P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for 2-Ethynyl-naphthalene

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