Phosphorus pentachloride → 4-tert-butyl-N-[5-(2-chloro-5-methoxy-phenoxy)-6-chloromethyl-2-(morpholin-4-yl)-pyrimidin-4-yl]-benzenesulphonamide

HRID 37095Notes

Reaction equation

HRID 37095 reaction equation
[C:1]([C:5]1[CH:10]=[CH:9][C:8]([S:11]([NH:14][C:15]2[C:20]([O:21][C:22]3[CH:27]=[C:26]([O:28][CH3:29])[CH:25]=[CH:24][C:23]=3[Cl:30])=[C:19]([CH2:31]O)[N:18]=[C:17]([N:33]3[CH2:38][CH2:37][O:36][CH2:35][CH2:34]3)[N:16]=2)(=[O:13])=[O:12])=[CH:7][CH:6]=1)([CH3:4])([CH3:3])[CH3:2].P(Cl)(Cl)(Cl)(Cl)[Cl:40]>O=P(Cl)(Cl)Cl>[C:1]([C:5]1[CH:6]=[CH:7][C:8]([S:11]([NH:14][C:15]2[C:20]([O:21][C:22]3[CH:27]=[C:26]([O:28][CH3:29])[CH:25]=[CH:24][C:23]=3[Cl:30])=[C:19]([CH2:31][Cl:40])[N:18]=[C:17]([N:33]3[CH2:34][CH2:35][O:36][CH2:37][CH2:38]3)[N:16]=2)(=[O:12])=[O:13])=[CH:9][CH:10]=1)([CH3:2])([CH3:4])[CH3:3]

Participants

4

Reactant 2

HCID 24819Phosphorus pentachlorideHCID 199347574-tert-butyl-N-[5-(2-chloro-5-methoxy-phenoxy)-6-hydroxymethyl-2-(morpholin-4-yl)-pyrimidin-4-yl]-benzenesulphonamide

Product 1

HCID 199347554-tert-butyl-N-[5-(2-chloro-5-methoxy-phenoxy)-6-chloromethyl-2-(morpholin-4-yl)-pyrimidin-4-yl]-benzenesulphonamideYield 63.8%

Reagents, catalysts & solvents 1

HCID 24813Phosphorus oxychlorideSolvent

Procedure

4.57 g of 4-tert-butyl-N-[5-(2-chloro-5-methoxy-phenoxy)-6-hydroxymethyl-2-(morpholin-4-yl)-pyrimidin-4-yl]benzenesulphonamide in 50 ml of POCl3 were stirred with 2.03 g of PCl5 at 20° C. for 2 hours. Thereafter, the POCl3 was distilled off and the residue was partitioned between ethyl acetate and aqueous 1N NaOH. The organic phase was washed with water, dried and the solvent was evaporated. The residue was chromatographed over silica gel with dichloromethane and chloroform, thereafter recrystallized from dichloromethane-ethanol. There were obtained 3.01 g of 4-tert-butyl-N-[5-(2-chloro-5-methoxy-phenoxy)-6-chloromethyl-2-(morpholin-4-yl)-pyrimidin-4-yl]-benzenesulphonamide, m.p. 170° C., MS: M=581.

Workup

  1. distillationThereafter, the POCl3 was distilled off
  2. customthe residue was partitioned between ethyl acetate and aqueous 1N NaOH
  3. washThe organic phase was washed with water
  4. customdried
  5. customthe solvent was evaporated
  6. customThe residue was chromatographed over silica gel with dichloromethane and chloroform
  7. customrecrystallized from dichloromethane-ethanol

Sources & evidence

ORD record
ord-fc184ab77cc448dcb117f42007e8a033
Source dataset
uspto-grants-1995_05
Patent number
US05420129

Reaction notes

Loading…