Hydrochloric Acid → HCID 136219877, compound

HRID 412280Notes

Reaction equation

HRID 412280 reaction equation
[CH:1]1([CH2:4][O:5][C:6]2[CH:11]=[CH:10][CH:9]=[C:8]([O:12]CC3C=CC(OC)=CC=3)[C:7]=2[C:22]2[CH:23]=[C:24]([CH:33]3[CH2:38][CH2:37][CH2:36][N:35](C(OC(C)(C)C)=O)[CH2:34]3)[C:25]3[CH2:30][O:29][C:28](=[O:31])[NH:27][C:26]=3[N:32]=2)[CH2:3][CH2:2]1.[ClH:46]>O1CCOCC1>[ClH:46].[CH:1]1([CH2:4][O:5][C:6]2[CH:11]=[CH:10][CH:9]=[C:8]([OH:12])[C:7]=2[C:22]2[CH:23]=[C:24]([CH:33]3[CH2:38][CH2:37][CH2:36][NH:35][CH2:34]3)[C:25]3[CH2:30][O:29][C:28](=[O:31])[NH:27][C:26]=3[N:32]=2)[CH2:2][CH2:3]1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 22258831tert-Butyl 3-(7-{2-(cyclopropylmethoxy)-6-[(4-methoxyphenyl)methoxy]phenyl}-2-oxo-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-5-yl)piperidine-1-carboxylate

Product 1

HCID 136219877HCID 136219877, compoundYield 62%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent2×

Procedure

To a solution of tert-butyl 3-(7-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-2-oxo-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-5-yl)-1-piperidinecarboxylate (2.0 g, 3.248 mmol) in dioxane (15 mL) was added 4N HCl in dioxane (30 mL) at room temperature. The stirring was continued for 3 hrs. After the solvent was removed by evaporation, the resulting solid was triturated with acetonitril, collected by filtration, and washed with acetonitrile. The solid was dried under reduced pressure to give 7-[2-(cyclopropylmethoxy)-6-hydroxyphenyl]-5-(3-piperidinyl)-1,4-dihydro-2H-pyrido[2,3-d][1,3]oxazin-2-one hydrochloride as a white solid (0.865 g, yield; 62%).

Workup

  1. customAfter the solvent was removed by evaporation
  2. customthe resulting solid was triturated with acetonitril
  3. filtrationcollected by filtration
  4. washwashed with acetonitrile
  5. customThe solid was dried under reduced pressure

Sources & evidence

ORD record
ord-66d1d1ff1b3a4bc68eb4691a49313566
Source dataset
uspto-grants-2003_05
Patent number
US06562811B1

Reaction notes

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