Triethylamine → (E)-4-((4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)vinyl)thiazol-2-yl)methyl) morpholine

Participants

Reaction Conditions

Reaction Steps

To a solution of 4-((4-bromothiazol-2-yl)methyl)morpholine (125 mg, 0.5 mmol) and triethylamine (0.2 mL, 1.5 mmol) in DMF (1.5 mL) was added 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.15 mL, 1 mmol) and Pd(Ptert-Bu3)2 (8 mg, 0.002 mmol). The mixture was heated to 120° C. under microwave irradiation for 1 h. Ethyl acetate (50 mL) was added and the solution was washed with water (2×10 mL) and brine (10 mL), dried over MgSO4 and concentrated to an orange oil (165 mg, 99%). 1H NMR (400 MHz, CDCl3) δ 7.31 (d, J=18.0 Hz, 1H), 7.19 (s, 1H), 6.40 (d, J=18.0 Hz, 1H), 3.84 (s, 2H), 3.74 (bs, 4H), 2.61 (bs, 4H), 1.29 (s, 12H); MS ESI 337.1 [M+H]+, calcd for [C16H25BN2O3S+H]+ 337.2. [α]22.8°D=−169° (c 0.42, Methanol).

Provenance & Evidence