반응 #558639

반응 방정식

(1S,2S)-2-{4-[(R)-7-Fluoro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-indan-1-yloxy]-phenyl}-cyclopropanecarboxylic acid ethyl ester

Intermediate 24

(1S,2S)-2-{4-[(R)-7-Fluoro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-indan-1-yloxy]-phenyl}-cyclopropanecarboxylic acid ethyl ester

2-bromo-3-methoxypyridine

cesium carbonate

TFA

→

title compound

수율 26.8%

(1S,2S)-ethyl 2-(4-((1R)-7-fluoro-4-(3-methoxypyridin-2-yl)-2,3-dihydro-1H-inden-1-yloxy)phenyl)cyclopropanecarboxylate

수율 26.8%

용매

N,N-dimethylformamide

반응 조건

후처리

1. 1
   기타degassed with a flow of argon
2. 2
   여과filtered over basic aluminium oxide
3. 3
   세척the filter material is washed with N,N-dimethylformamide
4. 4
   기타The crude product is purified by reversed phase chromatography

실험 절차

(1S,2S)-2-{4-[(R)-7-Fluoro-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-indan-1-yloxy]-phenyl}-cyclopropanecarboxylic acid ethyl ester (Intermediate 24, 46.6 mg) and 2-bromo-3-methoxypyridine (28.2 mg) are dissolved N,N-dimethylformamide (1 mL) and degassed with a flow of argon. Aqueous 2M cesium carbonate solution (0.1 mL), 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (6.5 mg, 0.1 equiv.) are added and the mixture is heated at 80° C. for 2.5 hours under argon. The reaction mixture is acidified with 50% aq. TFA, filtered over basic aluminium oxide and the filter material is washed with N,N-dimethylformamide. The crude product is purified by reversed phase chromatography to give the title compound (Yield 12.0 mg).

출처