Phenylboronic Acid → Methyl 2-(4-methyl-2-phenyl-6-p-tolylpyrimidin-5-yl)pentanoate

HRID 1399584노트

반응식

HRID 1399584 반응식
Cl[C:2]1[N:7]=[C:6]([CH3:8])[C:5]([CH:9]([CH2:14][CH2:15][CH3:16])[C:10]([O:12][CH3:13])=[O:11])=[C:4]([C:17]2[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=2)[N:3]=1.[C:24]1(B(O)O)[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.C(N(CC)C(C)C)(C)C>COCCOC.O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[CH3:8][C:6]1[C:5]([CH:9]([CH2:14][CH2:15][CH3:16])[C:10]([O:12][CH3:13])=[O:11])=[C:4]([C:17]2[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=2)[N:3]=[C:2]([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[N:7]=1

참가 물질

7

반응물 3

HCID 66827Phenylboronic AcidHCID 81531DiisopropylethylamineHCID 86665647Methyl 2-(2-chloro-4-methyl-6-p-tolylpyrimidin-5-yl)pentanoate

생성물 1

HCID 50994994Methyl 2-(4-methyl-2-phenyl-6-p-tolylpyrimidin-5-yl)pentanoate수율 89%

시약·촉매·용매 3

HCID 11979704Tetrakis(triphenylphosphine)palladium촉매HCID 962Water용매HCID 80711,2-Dimethoxyethane용매

실험 절차

Methyl 2-(2-chloro-4-methyl-6-p-tolylpyrimidin-5-yl)pentanoate (100 mg; 0.30 mmol), benzeneboronic acid (110 mg; 0.901 mmol) and tetrakis(triphenylphosphine) palladium(0) (34.7 mg; 0.030 mmol) were placed in a 5 mL reaction tube and dissolved in a mixture of degassed DME (1.50 mL) and water (0.5 mL). N,N-Diisopropylethylamine (0.185 mL; 1.202 mmol) was added, the tube was sealed and irradiated in a microwave oven at 130° C. for 1 h. The reaction mixture was partitioned between brine and ethyl acetate, the phases were separated and the water layer was extracted with ethyl acetate. The combined organic layers were dried over magnesium sulphate and concentrated under reduced pressure. The crude material was purified by flash chromatography on silica gel using a linear gradient of ethylacetate (1-10%) in heptane to give 100 mg (89%) of the title compound. ESI/APCI(+): 375 (M+H).

후처리

  1. customthe tube was sealed
  2. customirradiated in a microwave oven at 130° C. for 1 h
  3. customThe reaction mixture was partitioned between brine and ethyl acetate
  4. customthe phases were separated
  5. extractionthe water layer was extracted with ethyl acetate
  6. dry with materialThe combined organic layers were dried over magnesium sulphate
  7. concentrationconcentrated under reduced pressure
  8. customThe crude material was purified by flash chromatography on silica gel using a linear gradient of ethylacetate (1-10%) in heptane

출처 및 근거

ORD 기록
ord-478109444d0341f3a5c2c575916a0dfd
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08906906B2

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