반응 #44321

반응 방정식

2-bromopyridine

hydrochloric acid

(3-methoxyphenyl)magnesium bromide

3-bromoanisole

magnesium

→

2-(3-methoxyphenyl)pyridine

용매

THF

tetrahydrofuran

반응 조건

후처리

1. 1
   추출the reaction mixture was extracted with chloroform
2. 2
   기타to obtain a target substance
3. 3
   workup.DISTILLATIONthe organic layer was distilled under reduced pressure

실험 절차

That is, as shown in the reaction scheme below, (3-methoxyphenyl)magnesium bromide was synthesized from 22.4 g (120 mmol) of 3-bromoanisole with 3.4 g of magnesium in dry tetrahydrofuran (THF) in an argon stream by a conventional manner. This was slowly added to a dry THF solution of 15.8 g (100 mmol) of 2-bromopyridine and 1.8 g of (1,2-bis(diphenylphosphino)ethane)dichloronickel (II) (Ni(dppe)Cl2) and the mixture was stirred at 50° C. for 1 hour. After adding 250 ml of 5% hydrochloric acid aqueous solution to the reaction mixture, the reaction mixture was extracted with chloroform to obtain a target substance and the organic layer was distilled under reduced pressure. 17.4 g (93.9 mmol) of 2-(3-methoxyphenyl)pyridine (3-MeO-PPy) was obtained as a colorless transparent liquid. Identification was performed by CHN elementary analysis and 1H-NMR.

출처