تفاعل #77674

معادلة التفاعل

pyrazole

4-methoxyphenylboronic acid

pyridine

→

title compound

المردود 62.0%

1-(4-Methoxy-phenyl)-1H-pyrazole

المردود 62.0%

المذيبات

methylene chloride

ظروف التفاعل

المعالجة

1. 1
   ترشيحfiltered through diatomaceous earth
2. 2
   تركيزThe filtrate was concentrated in vacuo
3. 3
   أخرىpurified by column chromatography (silica gel; isocratic 8% ethyl acetate/hexanes)

الإجراء التجريبي

Copper (II) acetate (960 mg, 5.28 mmol) was added to a flame-dried flask charged with pyrazole (240 mg, 3.52 mmol), 4-methoxyphenylboronic acid (1.07 g, 7.04 mmol), 4 A molecular sieves (1.35 activated powder), and pyridine (570 μl, 7.04 mmol) in methylene chloride. The reaction was stirred for approximately two days at room temperature and then filtered through diatomaceous earth. The filtrate was concentrated in vacuo and purified by column chromatography (silica gel; isocratic 8% ethyl acetate/hexanes) to yield 381 mg (2.18 mmol, 62% yield) of the title compound. LRMS ([M+H]+)=175.2.

المصدر