CAS: 269410-16-4

2-(4-Methoxynaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is a photochromic dioxaborolane. When irradiated with ultraviolet light of a wavelength of 365 nm, it undergoes an intramolecular cyclization to form a naphthopyran. It can be used as a pinacol ester in the synthesis of branched chain methylmagnesium compounds and halogenated naphthols. This compound is not reactive with acid dimethyl esters such as ethyl acetate. 2-(4-Methoxynaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is prepared by reacting 4-(methoxy)naphthalene with boron trifluoride etherate in

2-(4-Methoxynaphthalen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane