HCID 59144153, compound → Phenyl methyl(2-(7-(thiophene-2-carboximidamido)-2H-benzo[b][1,4]thiazin-4(3H)-yl)ethyl)carbamate

HRID 424488Notes

Reaction equation

HRID 424488 reaction equation
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]2[N:10]([CH2:11][CH2:12][N:13]([CH3:23])[C:14](=[O:22])[O:15][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[CH2:9][CH2:8][S:7][C:6]=2[CH:24]=1.I.[S:26]1[CH:30]=[CH:29][CH:28]=[C:27]1[C:31](SC)=[NH:32]>C(O)C.O.C(=O)([O-])[O-].[Na+].[Na+]>[CH3:23][N:13]([CH2:12][CH2:11][N:10]1[CH2:9][CH2:8][S:7][C:6]2[CH:24]=[C:2]([NH:1][C:31]([C:27]3[S:26][CH:30]=[CH:29][CH:28]=3)=[NH:32])[CH:3]=[CH:4][C:5]1=2)[C:14](=[O:22])[O:15][C:16]1[CH:17]=[CH:18][CH:19]=[CH:20][CH:21]=1

Participants

6

Reactant 2

HCID 59144153HCID 59144153, compoundHCID 66704664Methyl thiophene-2-carbimidothioate hydroiodide

Product 1

HCID 178484232Phenyl methyl(2-(7-(thiophene-2-carboximidamido)-2H-benzo[b][1,4]thiazin-4(3H)-yl)ethyl)carbamateYield 68.3%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 10340Sodium CarbonateSolvent

Procedure

To a stirred solution of phenyl 2-(7-amino-2H-benzo[b][1,4]thiazin-4(3H)-yl)ethyl(methyl)carbamate (80 mg, 0.233 mmol) in ethanol (5 mL) under argon was added methyl thiophene-2-carbimidothioate hydroiodide (133 mg, 0.466 mmol). The mixture was then stirred overnight at room temperature. The mixture was then diluted with water and sodium carbonate and then extracted with dichloromethane (2×). The combined organics were dried, filtered, concentrated, and then chromatographed in ethyl acetate, yielding the desired product (72 mg, 68%). 1H NMR (DMSO-d6) δ 7.74-7.69 (m, 1H), 7.58-7.56 (m, 1H), 7.42-7.34 (m, 2H), 7.25-7.17 (m, 1H), 7.14-7.05 (m, 3H), 6.83-6.80 (m, 1H), 6.53-6.44 (m, 2H), 6.36 (brs, 2H), 3.63-3.55 (m, 4H), 3.49-3.45 (m, 2H), 3.11, 2.98 (2s, 3H), 3.06-3.01 (m, 2H); MS-EI: (m/z, %) 452 (M+, 97), 288 (100).

Workup

  1. extractionextracted with dichloromethane (2×)
  2. customThe combined organics were dried
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customchromatographed in ethyl acetate

Sources & evidence

ORD record
ord-74315e1ca67c44f98a5452d34a8b1c28
Source dataset
uspto-grants-2012_01
Patent number
US08106043B2

Reaction notes

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