Piperazine → HCID 68691981, compound

HRID 1170235Notes

Reaction equation

HRID 1170235 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[C:23]3[C:18](=[CH:19][C:20]([O:24][CH2:25][CH2:26][CH2:27]OS(C)(=O)=O)=[CH:21][CH:22]=3)[N:17]=[CH:16][N:15]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[NH:33]1[CH2:38][CH2:37][NH:36][CH2:35][CH2:34]1>O1CCOCC1>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][CH:11]([C:14]2[C:23]3[C:18](=[CH:19][C:20]([O:24][CH2:25][CH2:26][CH2:27][N:33]4[CH2:38][CH2:37][NH:36][CH2:35][CH2:34]4)=[CH:21][CH:22]=3)[N:17]=[CH:16][N:15]=2)[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

4

Reactant 2

HCID 4837PiperazineHCID 86609627HCID 86609627, compound

Product 1

HCID 68691981HCID 68691981, compound

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

4-[7-(3-Methanesulfonyloxy-propoxy)-quinazolin-4-yl]-piperidine-1-carboxylic acid tert-butyl ester (0. 1 mmol), prepared as described in Example 27, was dissolved in anhydrous dioxane together with piperazine (0.5 mmol) and the mixture was stirred at 100° C. overnight and then concentrated in vacuo, then diluted with water and extracted with DCM. The DCM extract was washed with water thrice, dried over anhydrous MgSO4, filtered and concentrated in vacuo to obtain 4-[7-(3-piperazin-1-yl-propoxy)-quinazolin-4-yl]-piperidine-1-carboxylic acid tert-butyl ester. This (0.05 mmol) was dissolved in anhydrous DCM (1 mL) and treated with Et3N (0.1 mmol) followed by methanesulfonyl chloride (0. 1 mmol) and the mixture was stirred at rt overnight and then washed with water thrice, then dried over anhydrous MgSO4, filtered and concentrated in vacuo. To this was added 3M HCl/MeOH (1 mL) and the mixture was stirred at rt for 2 h and then concentrated in vacuo.

Workup

  1. concentrationconcentrated in vacuo
  2. additiondiluted with water
  3. extractionextracted with DCM
  4. extractionThe DCM extract
  5. washwas washed with water thrice
  6. dry with materialdried over anhydrous MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-1076375847034f2cacd8aa2d78805785
Source dataset
uspto-grants-2010_11
Patent number
US07825244B2

Reaction notes

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