N-Methyl-4-nitroaniline → 2-[N-methyl-N-(4-nitrophenyl)amino]-4H-pyrido[3,2-e]-1,3-thiazin-4-one

HRID 367161Notes

Reaction equation

HRID 367161 reaction equation
Cl[C:2]1[N:10]=[CH:9][CH:8]=[CH:7][C:3]=1[C:4]([OH:6])=O.S(Cl)(Cl)=O.[S-:15][C:16]#[N:17].[NH4+].[CH3:19][NH:20][C:21]1[CH:26]=[CH:25][C:24]([N+:27]([O-:29])=[O:28])=[CH:23][CH:22]=1>CC(C)=O.CN(C=O)C>[CH3:19][N:20]([C:16]1[S:15][C:2]2[N:10]=[CH:9][CH:8]=[CH:7][C:3]=2[C:4](=[O:6])[N:17]=1)[C:21]1[CH:22]=[CH:23][C:24]([N+:27]([O-:29])=[O:28])=[CH:25][CH:26]=1

Participants

7

Reactant 4

HCID 7483N-Methyl-4-nitroanilineHCID 15666Ammonium thiocyanateHCID 24386Thionyl ChlorideHCID 762582-Chloronicotinic acid

Product 1

HCID 232877462-[N-methyl-N-(4-nitrophenyl)amino]-4H-pyrido[3,2-e]-1,3-thiazin-4-oneYield 81%

Reagents, catalysts & solvents 2

HCID 180AcetoneSolvent2×HCID 6228DimethylformamideSolvent

Procedure

The reaction procedure of Example 57 was followed except that 1.757 g (11.2 mmol) of 2-chloronicotinic acid, 15 ml of thionyl chloride, two droplets of DMF, 891 mg of ammonium thiocyanate, 15 ml of acetone, 1.78 g of N-methyl-4-nitroaniline and 10 ml of acetone were used. The product was then recrystallized from ethanol to obtain 2.85 g of 2-[N-methyl-N-(4-nitrophenyl)amino]-4H-pyrido[3,2-e]-1,3-thiazin-4-one.

Workup

  1. customThe reaction procedure of Example 57
  2. customThe product was then recrystallized from ethanol

Sources & evidence

ORD record
ord-6bc221cc9899400ea7521cfa5b22b2eb
Source dataset
uspto-grants-2000_10
Patent number
US06133258

Reaction notes

Loading…