Dicyclohexylcarbodiimide → phenyl-(3-trifluoromethoxy-phenylamino)-acetic acid (R)-(1-aza-bicyclo[2.2.2]oct-3-yl)ester
Reaction equation
C1CCC(N=C=NC2CCCCC2)CC1.Cl.[C:17]1([CH:23]([NH:27][C:28]2[CH:33]=[CH:32][CH:31]=[C:30]([O:34][C:35]([F:38])([F:37])[F:36])[CH:29]=2)[C:24]([OH:26])=[O:25])[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.C1C=CC2N(O)N=NC=2C=1.[N:49]12[CH2:56][CH2:55][CH:52]([CH2:53][CH2:54]1)[C@@H:51](O)[CH2:50]2>C1COCC1>[N:49]12[CH2:56][CH2:55][CH:52]([CH2:53][CH2:54]1)[C@@H:51]([O:25][C:24](=[O:26])[CH:23]([C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1)[NH:27][C:28]1[CH:33]=[CH:32][CH:31]=[C:30]([O:34][C:35]([F:36])([F:37])[F:38])[CH:29]=1)[CH2:50]2Participants
6
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Procedure
PS-DCC (920 mg, 1.15 mmol, loading: 1.25 mmol/g) is suspended in THF (15 mL). Phenyl-(3-trifluoromethoxy-phenylamino)-acetic acid hydrochloride (I40) (200 mg, 0.57 mmol) and HOBT (176 mg, 1.15 mmol) are added, followed by (R)-quinuclidin-3-ol (219 mg, 1.73 mmol) and the mixture is shaken for 16 hours at RT. PS-DCC is filtered off and the filtrate is evaporated. The resulting residue is dissolved in EtOAc and washed with water, sat. NaHCO3, water and brine. The organic phase is dried over Na2SO4, filtered and evaporated to give the title compound as a colorless oil (206 mg, 85% yield, mixture of diastereoisomers).
Workup
- filtrationPS-DCC is filtered off
- customthe filtrate is evaporated
- dissolutionThe resulting residue is dissolved in EtOAc
- washwashed with water, sat. NaHCO3, water and brine
- dry with materialThe organic phase is dried over Na2SO4
- filtrationfiltered
- customevaporated
Sources & evidence
- ORD record
- ord-a384c87d74e246f396fff8d21f9ae1d5
- Source dataset
- uspto-grants-2013_06
- Patent number
- US08455646B2
Reaction notes
Loading…