Bentazon → HCID 22617261, compound

HRID 2050237Notes

Reaction equation

HRID 2050237 reaction equation
[C-:1]#[N:2].[Na+].BrBr.[CH:6]([N:9]1[C:14](=[O:15])[C:13]2[CH:16]=[CH:17][CH:18]=[CH:19][C:12]=2[NH:11][S:10]1(=[O:21])=[O:20])([CH3:8])[CH3:7].[OH-].[Na+]>O>[C:1]([N:11]1[C:12]2[CH:19]=[CH:18][CH:17]=[CH:16][C:13]=2[C:14](=[O:15])[N:9]([CH:6]([CH3:8])[CH3:7])[S:10]1(=[O:20])=[O:21])#[N:2]

Participants

6

Reactant 4

HCID 2328BentazonHCID 8929Sodium CyanideHCID 14798Sodium HydroxideHCID 24408Bromine

Product 1

HCID 22617261HCID 22617261, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent3×

Conditions

Temperature
50 °C

Procedure

5.4 parts of sodium cyanide in 40 parts of water are added dropwise to 17.6 parts of bromine in 150 parts of water at from 5° to 10° C. A solution of 24 parts of 3-isopropyl-2,1,3-benzothiadiazin-4-one-2,2-dioxide and 4 parts of sodium hydroxide in 100 parts of water is then added and the mixture is stirred for 2 hours at 50° C. When it has cooled, the precipitate is filtered off and dried. 25 parts of 1-cyano-3-isopropyl-2,1,3-benzothiadiazin-4-one-2,2-dioxide of melting point 99°-101° C. are obtained.

Workup

  1. temperatureWhen it has cooled
  2. filtrationthe precipitate is filtered off
  3. customdried

Sources & evidence

ORD record
ord-b32426e6149d4eaeb55639c4e762a38c
Source dataset
uspto-grants-1980_04
Patent number
US04200743

Reaction notes

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