Triethylamine → HCID 11258514, compound

HRID 1296521Notes

Reaction equation

HRID 1296521 reaction equation
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]2[N:10]([CH3:11])[C:9](=[O:12])[O:8][C:7]([CH3:14])([CH3:13])[C:6]=2[CH:15]=1.C(N(CC)CC)C.[Cl:23][C:24]1[C:29]([Cl:30])=[CH:28][CH:27]=[CH:26][C:25]=1[S:31](Cl)(=[O:33])=[O:32]>C(Cl)Cl>[Cl:23][C:24]1[C:29]([Cl:30])=[CH:28][CH:27]=[CH:26][C:25]=1[S:31]([NH:1][C:2]1[CH:3]=[CH:4][C:5]2[N:10]([CH3:11])[C:9](=[O:12])[O:8][C:7]([CH3:13])([CH3:14])[C:6]=2[CH:15]=1)(=[O:33])=[O:32]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 27342222,3-Dichlorobenzene-1-sulfonyl chlorideHCID 69215309HCID 69215309, compound

Product 1

HCID 11258514HCID 11258514, compoundYield 5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of 6-amino-1,4,4-trimethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one (0.15 g, 0.73 mmol) in methylene chloride (5 mL) at 0° C. was added triethylamine (0.15 mL, 1.07 mmol). After 10 minutes, 2,3-dichlorobenzenesulfonyl chloride (0.27 g, 1.10 mmol) was added. The solution was stirred for 5 hours, then partitioned between ammonium chloride solution (sat.) and methylene chloride. The organic layer was dried over magnesium sulfate and concentrated. Flash silica gel column separation with 30% ethyl acetate/hexane followed by trituration with ether gave 2,3-dichloro-N-(1,4,4-trimethyl-2-oxo-1,4-dihydro-2H-3,1-benzoxazin-6-yl)benzenesulfonamide as an off-white solid (0.015 g, 5%). 1H NMR (DMSO-d6): δ 10.17 (s, 1H), 8.02 (dd, J=7.9, 1.4 Hz, 1H), 7.93 (dd, J=8.1, 1.4 Hz, 1H), 7.56 (t, J=8.0 Hz, 1H), 7.03 (m, 3H), 3.20 (s, 3H), 1.48 (s, 6H). MS (ESI) m/z 415/417/419 ([M+H]+); MS (ESI) m/z 413/415/417 ([M−H]−).

Workup

  1. custompartitioned between ammonium chloride solution (sat.) and methylene chloride
  2. dry with materialThe organic layer was dried over magnesium sulfate
  3. concentrationconcentrated
  4. customFlash silica gel column separation with 30% ethyl acetate/hexane

Sources & evidence

ORD record
ord-c05b7f67c26c4917bf1a0f0cf805dd08
Source dataset
uspto-grants-2007_07
Patent number
US07247625B2

Reaction notes

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