반응 #339718

반응 방정식

2-(4-amino-phenyl)-1-ethyl-6-methoxy-1H-indole-3-carbonitrile

ethyl chloroformate

→

[4-(3-cyano-1-ethyl-6-methoxy-1H-indol-2-yl)-phenyl]-carbamic acid ethyl ester

수율 55.0%

용매

EtOAc

H2O

NaHCO3

반응 조건

후처리

1. 1
   기타prepared
2. 2
   기타is prepared at 0° C.
3. 3
   추출extracted with EtOAc (2×)
4. 4
   세척The organic phases are washed with H2O and saturated NaCl
5. 5
   기타dried
6. 6
   농축concentrated

실험 절차

A biphasic mixture of 2-(4-amino-phenyl)-1-ethyl-6-methoxy-1H-indole-3-carbonitrile (70 mg, 0.24 mmol), prepared as described in example 1Ga step B, and ethyl chloroformate (0.03 mL, 0.29 mmol) in EtOAc (3 mL) and saturated NaHCO3 (3 mL) is prepared at 0° C. and then allowed to warm to room temperature and stirred for 24 h. The reaction is then diluted with H2O and extracted with EtOAc (2×). The organic phases are washed with H2O and saturated NaCl and then dried and concentrated. Flash chromatography (EtOAc/hexanes 20-40%) gives 48 mg (55%) of [4-(3-cyano-1-ethyl-6-methoxy-1H-indol-2-yl)-phenyl]-carbamic acid ethyl ester as an off-white solid.

출처