Potassium Carbonate → (2-Nitro-4-trifluoromethyl-5-vinyl-phenyl)-carbamic acid tert-butyl ester

HRID 498172

반응식

HRID 498172 반응식
[C:1]([O:5][C:6](=[O:22])[NH:7][C:8]1[CH:13]=[C:12](Cl)[C:11]([C:15]([F:18])([F:17])[F:16])=[CH:10][C:9]=1[N+:19]([O-:21])=[O:20])([CH3:4])([CH3:3])[CH3:2].[CH:23](B(O)O)=[CH2:24].C([O-])([O-])=O.[K+].[K+]>O.O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:1]([O:5][C:6](=[O:22])[NH:7][C:8]1[CH:13]=[C:12]([CH:23]=[CH2:24])[C:11]([C:15]([F:18])([F:17])[F:16])=[CH:10][C:9]=1[N+:19]([O-:21])=[O:20])([CH3:4])([CH3:3])[CH3:2]

참가 물질

7

반응물 3

HCID 11430Potassium CarbonateHCID 4683185Vinylboronic acidHCID 69489376(5-Chloro-2-nitro-4-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester

생성물 1

HCID 69486631(2-Nitro-4-trifluoromethyl-5-vinyl-phenyl)-carbamic acid tert-butyl ester수율 37%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 962Water용매HCID 312751,4-Dioxane용매

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온도
100 °C

실험 절차

A suspension of (5-chloro-2-nitro-4-trifluoromethyl-phenyl)-carbamic acid tert-butyl ester (Example A1) (6.8 g, 20 mmol), vinyl boronic acid [CAS-No. 4363-34-2] {Bull. Soc. Chim. Fr. 1966, (8), 2557-64} (4.312 g, 60 mmol) and K2CO3 (8.29 g, 60 mmol) in water (10 mL) and dioxane (50 mL) was purged by Ar-stream at 23° C. for 10 min, then tetrakis(triphenylphosphine)palladium(0) (693 mg, 0.6 mmol) was added and the mixture was heated to 100° C. for 20 h, filtered, evaporated and purified by column chromatography on silica gel (hexane/ethyl acetate 9:1) to yield a light yellow solid (2.476 g, 37%).

후처리

  1. filtrationfiltered
  2. customevaporated
  3. custompurified by column chromatography on silica gel (hexane/ethyl acetate 9:1)

출처 및 근거

ORD 기록
ord-71f366f258ee48e0874c000bee847ff0
출처 데이터셋
uspto-grants-2005_09
특허 번호
US06949542B2

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