Lithium Chloride → Ethyl 5-[2-(acetylamino)pyridin-4-yl]-4-cyano-3-iodothiophene-2-carboxylate

HRID 2401972노트

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HRID 2401972 반응식
[C:1]([C:3]1[C:4]([I:14])=[C:5]([C:9]([O:11][CH2:12][CH3:13])=[O:10])[S:6][C:7]=1I)#[N:2].C[Sn](C)(C)[C:17]1[CH:22]=[CH:21][N:20]=[C:19]([NH:23][C:24](=[O:26])[CH3:25])[CH:18]=1.[Cl-].[Li+]>O1CCOCC1.[Cu]I.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:24]([NH:23][C:19]1[CH:18]=[C:17]([C:7]2[S:6][C:5]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[C:4]([I:14])[C:3]=2[C:1]#[N:2])[CH:22]=[CH:21][N:20]=1)(=[O:26])[CH3:25]

참가 물질

7

반응물 3

HCID 433294Lithium ChlorideHCID 59529632N-(4-(trimethylstannyl)pyridin-2-yl)acetamideHCID 66748000Ethyl 4-cyano-3,5-diiodothiophene-2-carboxylate

생성물 1

HCID 66747307Ethyl 5-[2-(acetylamino)pyridin-4-yl]-4-cyano-3-iodothiophene-2-carboxylate수율 65%

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 178418397HCID 178418397, 화합물촉매HCID 312751,4-Dioxane용매

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온도
110 °C

실험 절차

To a solution of ethyl 4-cyano-3,5-diiodothiophene-2-carboxylate (0.473 g, 1.09 mmol) and N-[4-(trimethylstannyl)pyridin-2-yl]acetamide (0.392 g, 1.31 mmol) in dioxane (10.2 mL) was added lithium chloride (0.139 g, 3.28 mmol), copper(I) iodide (0.0624 g, 0.328 mmol), and tetrakis(triphenylphosphine)palladium(0) (0.0947 g, 0.0819 mmol). The reaction flask was evacuated and backfilled with argon, then the solution was heated at 110° C. for 2 hours. The mixture was cooled to room temperature and a mixture of dichloromethane and methanol was added until almost all solids had dissolved. The suspension was filtered through celite and the filtrate was evaporated. Column chromatography was performed to yield the title compound (0.312 g, 65%). LCMS: (FA) ES+ 442. 1H NMR (400 MHz, d6-DMSO) δ: 8.54-8.49 (m, 2H), 8.31 (s, 1H), 4.38-4.32 (m, 2H), 2.13 (s, 3H), 1.36-1.29 (m, 3H).

후처리

  1. customThe reaction flask was evacuated
  2. temperatureThe mixture was cooled to room temperature
  3. additiona mixture of dichloromethane and methanol
  4. additionwas added until almost all solids
  5. dissolutionhad dissolved
  6. filtrationThe suspension was filtered through celite
  7. customthe filtrate was evaporated

출처 및 근거

ORD 기록
ord-71d69a61b54742efac7b8b09db7d0aa4
출처 데이터셋
uspto-grants-2014_08
특허 번호
US08796271B2

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