Water → Methyl 2,6-dichloro-4-cyanonicotinate

HRID 711438

反応式

HRID 711438 の反応式
[Cl:1][C:2]1[N:11]=[C:10]([Cl:12])[CH:9]=[C:8](I)[C:3]=1[C:4]([O:6][CH3:7])=[O:5].[C:14]([Zn]C#N)#[N:15].O.CCOC(C)=O>CN(C=O)C.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>[Cl:1][C:2]1[N:11]=[C:10]([Cl:12])[CH:9]=[C:8]([C:14]#[N:15])[C:3]=1[C:4]([O:6][CH3:7])=[O:5]

参加物

7

反応物 4

HCID 962WaterHCID 8857Ethyl AcetateHCID 58317523Methyl 2,6-dichloro-4-iodonicotinateHCID 178514179HCID 178514179、化合物

生成物 1

HCID 58317683Methyl 2,6-dichloro-4-cyanonicotinate収率 40.3%

試薬・触媒・溶媒 2

HCID 178418397HCID 178418397、化合物触媒HCID 6228Dimethylformamide溶媒

反応条件

温度
100 °C

実験手順

A mixture of tetrakis(triphenylphosphine)palladium (34.8 mg, 0.03 mmol), methyl 2,6-dichloro-4-iodonicotinate (100 mg, 0.301 mmol) and dicyanozinc (38.9 mg, 0.331 mmol) in DMF (2 mL) was stirred at 100° C. overnight under N2 atmosphere. To the resulting mixture were added H2O and EtOAc. The aqueous phase was extracted with EtOAc, and the combined organic layers were washed with H2O and brine, dried over MgSO4 and evaporated. The residue was purified by chromatography on SiO2 to give the title compound as a white solid (28 mg, 40%). 1H NMR (500 MHz, DMSO-d6) δ ppm 3.99 (s, 3H), 8.44 (s, 1H).

後処理

  1. extractionThe aqueous phase was extracted with EtOAc
  2. washthe combined organic layers were washed with H2O and brine
  3. dry with materialdried over MgSO4
  4. customevaporated
  5. customThe residue was purified by chromatography on SiO2

出典と根拠

ORDレコード
ord-1754059833614813b7ab368dda19dd23
出典データセット
uspto-grants-2015_11
特許番号
US09181255B2

関連ノート

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