Thionyl Chloride → 2,6-dichloro-alpha-(4-chlorophenyl)-4(4,5-dihydro-3,5-dioxo-1,2,4-triazin-2(3H)-yl)benzeneacetylchloride

HRID 35558Notes

Reaction equation

HRID 35558 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([N:8]2[C:13](=[O:14])[NH:12][C:11](=[O:15])[CH:10]=[N:9]2)[CH:5]=[C:4]([Cl:16])[C:3]=1[CH:17]([C:21]1[CH:26]=[CH:25][C:24]([Cl:27])=[CH:23][CH:22]=1)[C:18]([OH:20])=O.S(Cl)([Cl:30])=O>>[Cl:16][C:4]1[CH:5]=[C:6]([N:8]2[C:13](=[O:14])[NH:12][C:11](=[O:15])[CH:10]=[N:9]2)[CH:7]=[C:2]([Cl:1])[C:3]=1[CH:17]([C:21]1[CH:26]=[CH:25][C:24]([Cl:27])=[CH:23][CH:22]=1)[C:18]([Cl:30])=[O:20]

Participants

3

Reactant 2

HCID 24386Thionyl ChlorideHCID 230351982,6-dichloro-alpha-(4-chlorophenyl)-4-(4,5-dihydro-3,5-dioxo-1,2,4-triazin-2(3H)-yl)-benzeneacetic acid

Product 1

HCID 225573202,6-dichloro-alpha-(4-chlorophenyl)-4(4,5-dihydro-3,5-dioxo-1,2,4-triazin-2(3H)-yl)benzeneacetylchlorideYield 100%

Procedure

A mixture of 2 parts of 2,6-dichloro-α-(4-chlorophenyl)-4-(4,5-dihydro-3,5-dioxo-1,2,4-triazin-2(3H)-yl)benzeneacetic acid and 48 parts of thionyl chloride was stirred for 1 hour at reflux temperature. The reaction mixture was evaporated, yielding 2.28 parts (100%) of 2,6-dichloro-α-(4-chlorophenyl)-4-(4,5-dihydro-3,5-dioxo-1,2,4-triazin-2(3H)-yl)benzeneacetyl chloride as a residue (intermediate 32).

Workup

  1. temperatureat reflux temperature
  2. customThe reaction mixture was evaporated

Sources & evidence

ORD record
ord-4b6f01c5b1a14d869f9505dacb708a37
Source dataset
uspto-grants-1988_08
Patent number
US04767760

Reaction notes

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