Dabco → N,N-diethyl-N'[(4-methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]-1,2-benzenedisulfonamide

HRID 1105751Notes

Reaction equation

HRID 1105751 reaction equation
[NH2:1][C:2]1[N:7]=[C:6]([O:8][CH3:9])[CH:5]=[C:4]([CH3:10])[N:3]=1.[CH2:11]([N:13]([CH2:29][CH3:30])[S:14]([C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=1[S:23]([N:26]=[C:27]=[O:28])(=[O:25])=[O:24])(=[O:16])=[O:15])[CH3:12].C1N2CCN(CC2)C1>C(#N)C>[CH2:29]([N:13]([CH2:11][CH3:12])[S:14]([C:17]1[C:18]([S:23]([NH:26][C:27]([NH:1][C:2]2[N:7]=[C:6]([O:8][CH3:9])[CH:5]=[C:4]([CH3:10])[N:3]=2)=[O:28])(=[O:25])=[O:24])=[CH:19][CH:20]=[CH:21][CH:22]=1)(=[O:16])=[O:15])[CH3:30]

Participants

5

Reactant 3

HCID 9237DabcoHCID 5872364-Methoxy-6-methylpyrimidin-2-amineHCID 12819607o-N,N-Diethylsulfamoylbenzenesulfonyl isocyanate

Product 1

HCID 12819608N,N-diethyl-N'[(4-methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]-1,2-benzenedisulfonamideYield 34.2%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 0.8 g of 2-amino-4-methoxy-6-methylpyrimidine, 2.8 g of the crude sulfonyl isocyanate from Example 4 and a few crystals of DABCO in 25 ml of acetonitrile was stirred at room temperature for 16 hours. A small amount of unreacted aminopyrimidine was filtered off and the filtrate concentrated in-vacuo to give a hard glass. Crystallization from methanol gave 0.9 g of N,N-diethyl-N'[(4-methoxy-6-methylpyrimidin-2-yl)aminocarbonyl]-1,2-benzenedisulfonamide as a white solid, m.p. 170°-2°.

Workup

  1. filtrationA small amount of unreacted aminopyrimidine was filtered off
  2. concentrationthe filtrate concentrated in-vacuo
  3. customto give a hard glass
  4. customCrystallization from methanol

Sources & evidence

ORD record
ord-e0d1991dbb0247419b393f3b304c85b0
Source dataset
uspto-grants-1982_01
Patent number
US04310346

Reaction notes

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