Potassium Carbonate → (1R,3S,4S)-3-[(5-Bromo-pyrimidin-2-ylamino)-methyl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

HRID 882800Notes

Reaction equation

HRID 882800 reaction equation
[Br:1][C:2]1[CH:3]=[N:4][C:5](Cl)=[N:6][CH:7]=1.[C:9]([O:13][C:14]([N:16]1[C@H:21]([CH2:22][NH2:23])[C@@H:20]2[CH2:24][C@H:17]1[CH2:18][CH2:19]2)=[O:15])([CH3:12])([CH3:11])[CH3:10].C([O-])([O-])=O.[K+].[K+].CCN(C(C)C)C(C)C>CC1C=CC=CC=1C>[C:9]([O:13][C:14]([N:16]1[C@H:21]([CH2:22][NH:23][C:5]2[N:4]=[CH:3][C:2]([Br:1])=[CH:7][N:6]=2)[C@@H:20]2[CH2:24][C@H:17]1[CH2:18][CH2:19]2)=[O:15])([CH3:12])([CH3:10])[CH3:11]

Participants

6

Reactant 4

HCID 11430Potassium CarbonateHCID 81531DiisopropylethylamineHCID 6066655-Bromo-2-chloropyrimidineHCID 66866957tert-butyl (1R,3S,4S)-3-(aminomethyl)-2-azabicyclo[2.2.1]heptane-2-carboxylate

Product 1

HCID 66867454(1R,3S,4S)-3-[(5-Bromo-pyrimidin-2-ylamino)-methyl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Conditions

Temperature
138 °C

Procedure

5-Bromo-2-chloro-pyrimidine (8.62 mmol) is added to a solution of (1R,3S,4S)-3-aminomethyl-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (6.63 mmol) in o-xylene (25 mL). K2CO3 (20.0 mmol) and DIPEA (19.9 mmol) are added successively and the mixture is heated to 138° C. for 16 h. The mixture is cooled to rt and filtered. The residue is washed with DCM and the combined filtrates are concentrated in vacuo to give the desired product which is used without further purification. LC-MS: tR=1.09 min; [M+H]+=383.3.

Workup

  1. temperatureThe mixture is cooled to rt
  2. filtrationfiltered
  3. washThe residue is washed with DCM
  4. concentrationthe combined filtrates are concentrated in vacuo

Sources & evidence

ORD record
ord-a91eae23f64341bb91499d271d16dbf5
Source dataset
uspto-grants-2012_08
Patent number
US08236801B2

Reaction notes

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