Stannane, trimethyl(4-methylphenyl)- → 2-Cyano-4'-methyl-4-nitrobiphenyl

HRID 2255527

반응식

HRID 2255527 반응식
[C:1]1([CH3:11])[CH:6]=[CH:5][C:4]([Sn](C)(C)C)=[CH:3][CH:2]=1.Br[C:13]1[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][C:14]=1[C:15]#[N:16]>C1(C)C=CC=CC=1.CCOC(C)=O.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:15]([C:14]1[CH:17]=[C:18]([N+:21]([O-:23])=[O:22])[CH:19]=[CH:20][C:13]=1[C:4]1[CH:5]=[CH:6][C:1]([CH3:11])=[CH:2][CH:3]=1)#[N:16]

참가 물질

6

반응물 2

HCID 617834Stannane, trimethyl(4-methylphenyl)-HCID 70954232-Bromo-5-nitrobenzonitrile

생성물 1

HCID 190122062-Cyano-4'-methyl-4-nitrobiphenyl수율 74%

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 1140Toluene용매HCID 8857Ethyl Acetate용매

실험 절차

To a solution of p-tolyltrimethyltin (389 mg, 1.525 mmol) in dry toluene (5 mL) under N2 was added 2-bromo-5-nitro-benzonitrile (276 mg, 1.22 mmol) and Pd(PPh3)4 (176 mg; 10 mol %). The reaction was stirred at reflux under N2 for 24 hours and then cooled to room temperature. The mixture was diluted with EtOAc and the solid was removed by filtration through a pad of celite. The filtrate was concentrated in vacuo and the residue was purified by flash chromatography on a silica column eluting with Hex/EtOAc (10:1) to afford 214 mg (74%) of the titled compound as a slightly yellow solid. 1H-NMR: (300 MHz, CDCl3) δ 2.42 (s, 3H), 7.32 (d, 2H), 7.48 (d, 2H), 7.69 (d, 1H), 8.45 (dd, 1H), 8.61 (s, 1H).

후처리

  1. temperatureat reflux under N2 for 24 hours
  2. customthe solid was removed by filtration through a pad of celite
  3. concentrationThe filtrate was concentrated in vacuo
  4. customthe residue was purified by flash chromatography on a silica column
  5. washeluting with Hex/EtOAc (10:1)

출처 및 근거

ORD 기록
ord-38ef312c1790459e846951e4ceeebe01
출처 데이터셋
uspto-grants-1993_08
특허 번호
US05240928

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