반응 #1328651

반응 방정식

Sodium borohydride

5-[(3S)-3-(2-Allyloxy-4-chlorophenyl)-4-[(R)-1-(4-chlorophenyl)ethyl]-7-iodo-2,5-dioxo-1,4-benzodiazepin-1-yl]valeric acid tert-butyl ester

Methanol

→

title compound

수율 95.3%

5-[(3S)-3-(4-chloro-2-hydroxyphenyl)-4-[(R)-1-(4-chlorophenyl)ethyl]-7-iodo-2,5-dioxo-1,4-benzodiazepin-1-yl]valeric acid tert-butyl ester

수율 95.3%

용매

THF

반응 조건

후처리

1. 1
   workup.STIRRINGthe reaction was stirred for 15 additional minutes
2. 2
   기타The solvent was evaporated under vacuum
3. 3
   기타the residue was purified by column chromatography (AcOEt/Hexanes, 1:2)

실험 절차

5-[(3S)-3-(2-Allyloxy-4-chlorophenyl)-4-[(R)-1-(4-chlorophenyl)ethyl]-7-iodo-2,5-dioxo-1,4-benzodiazepin-1-yl]valeric acid tert-butyl ester (224 mg, 0.29 mmol) and dichloro bis(triphenylphosphine)palladium (II) (10 mg, 0.015 mmol) were dissolved at room temperature in THF (5 mL). Sodium borohydride (11 mg, 0.29 mmol) was added and the reaction was stirred under argon for 30 minutes. Methanol (10 mL) was added and the reaction was stirred for 15 additional minutes. The solvent was evaporated under vacuum and the residue was purified by column chromatography (AcOEt/Hexanes, 1:2) to give 200 mg of the title compound contaminated with 5-[(3S)-3-(2-Allyloxy-4-chlorophenyl)-4-[(R)-1-(4-chlorophenyl)ethyl]-2,5-dioxo-1,4-benzodiazepin-1-yl]valeric acid tert-butyl ester. This mixture was carried out to the next step without further purification.

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