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O-Xylene → 4-Cyclopropyl-3-nitropyridine

HRID 523524
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인쇄 미리보기

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HRID 523524 반응식
Cl[C:2]1[CH:7]=[CH:6][N:5]=[CH:4][C:3]=1[N+:8]([O-:10])=[O:9].[CH:11]1(B(O)O)[CH2:13][CH2:12]1.C1(C)C(C)=CC=CC=1.C(=O)([O-])[O-].[K+].[K+]>CCCCCC.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(OC(=O)C)C>[CH:11]1([C:2]2[CH:7]=[CH:6][N:5]=[CH:4][C:3]=2[N+:8]([O-:10])=[O:9])[CH2:13][CH2:12]1
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참가 물질

8

반응물 4

HCID 7237O-XyleneHCID 11430Potassium CarbonateHCID 27357814-Chloro-3-nitropyridineHCID 2760897Cyclopropylboronic acid

생성물 1

HCID 668018544-Cyclopropyl-3-nitropyridine수율 736.3%

시약·촉매·용매 3

HCID 178418397
HCID 178418397, 화합물
촉매
HCID 8058Hexane용매
HCID 8857Ethyl Acetate용매

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온도
130 °C

실험 절차

4-Chloro-3-nitropyridine (100 mg, 0.630 mmol) and cyclopropyl boronic acid (10.0 mg, 0.091 mmol) were added to a solution of xylene (3 mL) previously purged with argon (10 minutes). The reaction mixture was purged with argon for a further 15 minutes, followed by the addition of potassium carbonate (174.35 mg, 1.26 mmol) and Pd(PPh3)4 (34.5 mg, 0.063 mmol). The resulting mixture was heated to reflux at 130° C. overnight. The reaction was monitored by TLC (30% ethylacetate in hexane). The reaction mixture was cooled and concentrated to afford the crude product. Purification by column chromatography on silica gel (15% ethyl acetate in hexane) afforded 110 mg of the product (100% yield). LCMS Purity: 99%, m/z=165 (M+1)

후처리

  1. custompreviously purged with argon (10 minutes)
  2. customThe reaction mixture was purged with argon for a further 15 minutes
  3. temperatureThe resulting mixture was heated
  4. temperatureThe reaction mixture was cooled
  5. concentrationconcentrated
  6. customto afford the crude product
  7. customPurification by column chromatography on silica gel (15% ethyl acetate in hexane)

출처 및 근거

ORD 기록
ord-6175eb6066984c32900bc97d4e289272
출처 데이터셋
uspto-grants-2016_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09339501B2

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