2,6-Dichloropyrazine → Tert-butyl trans-4-[(6-chloropyrazin-2-yl)oxy]-3-fluoropiperidine-1-carboxylate
Reaction equation
Cl[C:2]1[CH:7]=[N:6][CH:5]=[C:4]([Cl:8])[N:3]=1.[F:9][C@H:10]1[C@H:15]([OH:16])[CH2:14][CH2:13][N:12]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:11]1.ClC1N=C(OC2CCN(C(OC(C)(C)C)=O)CC2)C=NC=1>>[Cl:8][C:4]1[N:3]=[C:2]([O:16][C@@H:15]2[CH2:14][CH2:13][N:12]([C:17]([O:19][C:20]([CH3:22])([CH3:21])[CH3:23])=[O:18])[CH2:11][C@H:10]2[F:9])[CH:7]=[N:6][CH:5]=1Participants
4
Procedure
tert-butyl trans-4-[(6-chloropyrazin-2-yl)oxy]-3-fluoropiperidine-1-carboxylate was prepared from 2,6-dichloropyrazine and tert-butyl trans-3-fluoro-4-hydroxypiperidine-1-carboxylate using the conditions described for the preparation of tert-butyl 4-[(6-chloropyrazin-2-yl)oxy]piperidine-1-carboxylate (Compound 1, Step 3). LRMS (ESI) calculated for C14H19ClFN3O3[M+Na]+, 354.1; found 354.1.
Sources & evidence
- ORD record
- ord-e9dc726166bb42f98131448dfb7f2bb5
- Source dataset
- uspto-grants-2012_05
- Patent number
- US08183245B2
Reaction notes
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