1-Iodoheptane → HCID 54291006, compound

HRID 1266349Notes

Reaction equation

HRID 1266349 reaction equation
[CH3:1][N:2]([CH3:15])[C:3](=[O:14])[NH:4][C:5]1[S:9][N:8]=[C:7]([OH:10])[C:6]=1[C:11]([NH2:13])=[O:12].CC([O-])(C)C.[K+].I[CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29]>CN(C=O)C.CCCCCC.C(OCC)(=O)C.CO.C(O)(=O)C>[CH3:1][N:2]([CH3:15])[C:3](=[O:14])[NH:4][C:5]1[S:9][N:8]=[C:7]([O:10][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29])[C:6]=1[C:11]([NH2:13])=[O:12]

Participants

6

Reactant 3

HCID 202741-IodoheptaneHCID 23665647Potassium tert-butoxideHCID 178484693HCID 178484693, compound

Product 1

HCID 54291006HCID 54291006, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 18469568HCID 18469568, compoundSolvent

Procedure

A suspension of 5-(3,3-Dimethyl-ureido)-3-hydroxy-isothiazole-4-carboxylic acid amide (200 mg, 0.87 mmol) in DMF (5 mL) was treated with KOtBu (107 mg, 0.96 mmol) at ambient temperature causing complete dissolution. Next was added 1-iodoheptane (1 mL) and the reaction stirred at ambient temperature until complete dissappearance of starting materials as measured by TLC using hexane/ethyl acetate/methanol/acetic acid (48/48/2/2) as eluent. The reaction mixture was then concentrated by rotary evaporation under high vacuum, the residue dissolved in ethyl acetate and methanol, and was then purified via radial chromatography (2 mm plate) using the same eluent as for TLC affording two components. The more polar material was identified as the N-alkyated adduct (102 mg, 0.311 mmol, 36%). 1H NMR (400 MHz, CDCl3) δ 0.86 (t, J=6.7 Hz, 3H), 1.25-1.31 (m, 8H), 1.64-1.70 (m, 2H), 3.07 (s, 6H), 3.68 (t, J=7.2 Hz, 2H), 5.40 (s, 1H), 8.86 (s, 1H), 12.1 (s, 1H) ppm; 13C NMR (101 MHz, CDCl3) δ 13.94, 22.45, 26.48, 28.74, 29.52, 31.52, 36.11, 42.54, 166.99 ppm; MS (APCl, m/z): 329 [M+H]+. The less polar material was the O-alkyated adduct (134 mg, 0.408 mmol, 48%). 1H NMR (400 MHz, CDCl3) δ 0.88 (t, J=6.8 Hz, 3H), 1.24-1.50 (m, 8H), 1.75-1.88 (m, 2H), 3.07 (s, 6H), 4.43 (t, J=6.7 Hz, 2H), 5.42 (s, 1H), 7.25 (s, 1H appears to be superimposed on CDCl3 peak), 11.6 (s, 1H) ppm; 13C NMR (101 MHz, CDCl3 ) δ 13.94, 22.45, 25.86, 28.83, 31.60, 36.11, 68.69, 97.69, 154.15, 162.27, 166.20, 169.45 ppm; MS (APCl, mlz): 329 [M+H]+.

Workup

  1. dissolutiondissolution
  2. concentrationThe reaction mixture was then concentrated by rotary evaporation under high vacuum
  3. dissolutionthe residue dissolved in ethyl acetate
  4. custommethanol, and was then purified via radial chromatography (2 mm plate)
  5. customaffording two components

Sources & evidence

ORD record
ord-4f66288c538b4e96b9d184a1ca09f79a
Source dataset
uspto-grants-2003_04
Patent number
US06548526B2

Reaction notes

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