Phosphorus trichloride → HCID 178522602, compound

HRID 2301412Notes

Reaction equation

HRID 2301412 reaction equation
[Br:1][C:2]1[CH:11]=[C:10]([C:12]([OH:14])=O)[C:9]([OH:15])=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[N:7]2.[NH2:16][C:17]1[S:18][C:19]([C:23]2[CH:28]=[CH:27][C:26]([Cl:29])=[CH:25][CH:24]=2)=[C:20]([OH:22])[N:21]=1.P(Cl)(Cl)Cl>O>[Br:1][C:2]1[CH:11]=[C:10]([C:12]([NH:16][C:17]2[S:18][CH:19]([C:23]3[CH:24]=[CH:25][C:26]([Cl:29])=[CH:27][CH:28]=3)[C:20](=[O:22])[N:21]=2)=[O:14])[C:9]([OH:15])=[C:8]2[C:3]=1[CH:4]=[CH:5][CH:6]=[N:7]2

Participants

5

Reactant 3

HCID 24387Phosphorus trichlorideHCID 145347685-Bromo-8-hydroxyquinoline-7-carboxylic acidHCID 183727262-Amino-5-(4-chlorophenyl)-4-thiazolol

Product 1

HCID 178522602HCID 178522602, compoundYield 11.5%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A solution of 5-bromo-8-hydroxyquinoline-7-carboxylic acid (0.268 g) of Preparation 2 and 2-amino-5-(4-chlorophenyl)-4-hydroxy-1,3-thiazole (0.227 g) in 50 mL xylenes is heated to reflux. To this is added dropwise PCl3 (0.069 g). Refluxing is continued overnight. The reaction is then cooled and water is added to destroy excess PCl3. The resulting solid is collected, washed with water and dried. The crude product is recrystallized from HOAc to yield 0.055 g of the title product as an orange solid.

Workup

  1. temperatureis heated to reflux
  2. temperatureRefluxing
  3. temperatureThe reaction is then cooled
  4. customto destroy excess PCl3
  5. customThe resulting solid is collected
  6. washwashed with water
  7. customdried
  8. customThe crude product is recrystallized from HOAc

Sources & evidence

ORD record
ord-c9c5a140e83f4502babcfdf01816369b
Source dataset
uspto-grants-2002_12
Patent number
US06500842B1

Reaction notes

Loading…