4,4,5,5-Tetramethyl-2-(phenylethynyl)-1,3,2-dioxaborolane

4,4,5,5-四甲基-2-(苯基乙炔基)-1,3,2-二氧杂硼烷

Also known as: Phenylethynylboronic acid pinacol ester, 2-Phenylethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 2-(Phenylethynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-(2-phenylethynyl)-

4,4,5,5-Tetramethyl-2-(phenylethynyl)-1,3,2-dioxaborolane (CAS 159087-45-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H17BO2 and a molecular weight of 228.09500 g/mol. It is also known as Phenylethynylboronic acid pinacol ester, 2-Phenylethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane and 2-(Phenylethynyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane. Key properties include a melting point of 49-68ºC and a boiling point of 265.4±23.0°C at 760 mmHg. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

159087-45-3

Jingsj CID

J-1069557-3

Molecular Formula

C₁₄H₁₇BO₂

Chinese Name

4,4,5,5-四甲基-2-(苯基乙炔基)-1,3,2-二氧杂硼烷

Molecular Weight

228.09500 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026