Potassium Phosphate, Tribasic → 2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-5-{2-ethyl-3-[(E)-2-(methyloxy)ethenyl]phenyl}-1,3,4-thiadiazole

Participants

Reaction Conditions

Reaction Steps

To a suspension of 2-bromo-5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3,4-thiadiazole (D10) (300 mg), 2-{2-ethyl-3-[(E)-2-(methyloxy)ethenyl]phenyl}-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (259 mg) and tripotassium phosphate (477 mg) in N,N-dimethylformamide (DMF) (8 mL) and water (2 mL) under nitrogen was added Pd(Ph3P)4 (104 mg). The reaction vessel was sealed and heated under microwave at 120° C. for 10 min. The reaction mixture was extracted with EA for 3 times, the combined organic layers were washed with brine, dried over anhydrous sodium sulfate, the dried solution was concentrated, and purified by column chromatography to afford 2-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-5-{2-ethyl-3-[(E)-2-(methyloxy)ethenyl]phenyl}-1,3,4-thiadiazole (D14) (290 mg) as a yellow oil. MS (ES): C22H23ClN2O2S requires 414. found 415.2 (M+H+).

Provenance & Evidence