Phosphorus oxychloride → HCID 178457471, compound

HRID 2169274Notes

Reaction equation

HRID 2169274 reaction equation
[CH2:1]([O:8][C:9]1[C:10]([C:29]([OH:31])=O)=[N:11][C:12]([CH2:16][C:17]2([C:22]3[CH:27]=[CH:26][C:25]([Br:28])=[CH:24][CH:23]=3)[CH2:21][CH2:20][CH2:19][CH2:18]2)=[N:13][C:14]=1[OH:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Si:32]([O:39][CH2:40][CH2:41][NH:42][CH:43]([CH3:45])[CH3:44])([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33].O=P(Cl)(Cl)Cl>N1C=CC=CC=1>[Si:32]([O:39][CH2:40][CH2:41][N:42]([CH:43]([CH3:45])[CH3:44])[C:29]([C:10]1[C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[C:14]([OH:15])[N:13]=[C:12]([CH2:16][C:17]2([C:22]3[CH:23]=[CH:24][C:25]([Br:28])=[CH:26][CH:27]=3)[CH2:21][CH2:20][CH2:19][CH2:18]2)[N:11]=1)=[O:31])([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33]

Participants

5

Reactant 3

HCID 24813Phosphorus oxychlorideHCID 57917054N-(2-((tert-butyldimethylsilyl)oxy)ethyl)propan-2-amineHCID 178524863HCID 178524863, compound

Product 1

HCID 178457471HCID 178457471, compoundYield 32%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a stirred solution of 5-benzyloxy-2-[1-(4-bromophenyl)-cyclopentylmethyl]-6-hydroxypyrimidine-4-carboxylic acid (231) (2.0 g, 4.14 mmol) and [2-(tert-butyl-dimethylsilanyloxy)-ethyl]-isopropyl-amine (8b) (2.7 g, 12.41 mmol) in pyridine (25 ml), was added POCl3 (1.16 ml, 12.41 ml) at −10° C. The reaction mixture was stirred at this temperature for 5 h. After completion of the reaction, the reaction mixture was quenched with water and the mixture was extracted with ethyl acetate. The organic part was washed with water, separated and dried over Na2SO4. After evaporation, the crude product was purified by 100-200 silica gel column chromatography using 30% ethyl acetate in hexane as the eluent to give 5-benzyloxy-2-[1-(4-bromophenyl)-cyclopentylmethyl]-6-hydroxypyrimidine-4-carboxylic acid [2-(tert-butyl-dimethylsilanyloxy)-ethyl]-isopropylamide (232) (0.9 g, 32%) as a brown solid.

Workup

  1. customAfter completion of the reaction
  2. customthe reaction mixture was quenched with water
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe organic part was washed with water
  5. customseparated
  6. dry with materialdried over Na2SO4
  7. customAfter evaporation
  8. customthe crude product was purified by 100-200 silica gel column chromatography

Sources & evidence

ORD record
ord-ddd571755cf64e77856b2f902eb96da5
Source dataset
uspto-grants-2015_06
Patent number
US09045486B2

Reaction notes

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