Water → tert-butyl N-[4-[3-(3-methyl-5-nitro-2-pyridinyl)phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamate

HRID 723239Notes

Reaction equation

HRID 723239 reaction equation
[C:1]([O:5][C:6](=[O:29])[NH:7][C:8]([C:10]1[S:11][C:12]([S:27][CH3:28])=[C:13]([S:15]([C:18]2[CH:23]=[CH:22][CH:21]=[C:20](B(O)O)[CH:19]=2)(=[O:17])=[O:16])[CH:14]=1)=[NH:9])([CH3:4])([CH3:3])[CH3:2].I[C:31]1[C:36]([CH3:37])=[CH:35][C:34]([N+:38]([O-:40])=[O:39])=[CH:33][N:32]=1.O>CN(C=O)C.[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:1]([O:5][C:6](=[O:29])[NH:7][C:8](=[NH:9])[C:10]1[S:11][C:12]([S:27][CH3:28])=[C:13]([S:15]([C:18]2[CH:23]=[CH:22][CH:21]=[C:20]([C:31]3[C:36]([CH3:37])=[CH:35][C:34]([N+:38]([O-:40])=[O:39])=[CH:33][N:32]=3)[CH:19]=2)(=[O:17])=[O:16])[CH:14]=1)([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 3

HCID 962WaterHCID 218867642-Iodo-3-methyl-5-nitropyridineHCID 140043492[3-[5-[N-[(2-methylpropan-2-yl)oxycarbonyl]carbamimidoyl]-2-methylsulfanylthiophen-3-yl]sulfonylphenyl]boronic acid

Product 1

HCID 145857668tert-butyl N-[4-[3-(3-methyl-5-nitro-2-pyridinyl)phenyl]sulfonyl-5-methylsulfanylthiophene-2-carboximidoyl]carbamateYield 48%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Procedure

A solution of {[4-(3-dihydroxyboranyl-benzenesulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester (0.058 mmol, 40 mg, Example 140: step a), 2-iodo-3-methyl-5-nitropyridine (0.08 mmol, 21.1 mg), CuI (0.01 mmol, 2.2 mg) and (Ph3P)4Pd (0.006 mmol) in DMF (0.6 mL) was heated at 100° under Ar for 3 hr. The reaction mixture was allowed to cool to RT and poured in to water (20 mL). The product was extracted with CH2Cl2 (3×10 mL). CH2Cl2 extracts were combined, dried (Na2SO4) and concentrated in vaccuo. The resulting residue was purified on silica (30% EtOAc:Hexane) to obtain (Imino-{4-[3-(3-methyl-5-nitro-pyridin-2-yl)-benzenesulfonyl]-5-methylsulfanyl-thiophen-2-yl}-methyl)-carbamic acid tert-butyl ester. Yield: 48%; 1H NMR (CDCl3) δ 9.36 (br, 1H), 8.37 and 8.25 (s, 1H each), 8.1 and 7.8 (d, J=2.4 Hz, 1H each), 7.93 (s, 1H), 7.74 (t, J=6.8 Hz, 1H), 2.7 and 2.5 (s, 3H each), 1.35 (s, 9H)

Workup

  1. extractionThe product was extracted with CH2Cl2 (3×10 mL)
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated in vaccuo
  4. customThe resulting residue was purified on silica (30% EtOAc:Hexane)

Sources & evidence

ORD record
ord-b8e0da5b395c4ff58e0f547b888b9279
Source dataset
uspto-grants-2006_11
Patent number
US07138530B2

Reaction notes

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