Benzene, 1-bromo-3-nitro- → Tert-butyl 4-(3-nitrophenyl)-1,2,3,6-tetrahydropyridine-1-carboxylate
Reaction equation
Br[C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([N+:8]([O-:10])=[O:9])[CH:3]=1.[C:11]([O:15][C:16]([N:18]1[CH2:23][CH:22]=[C:21](B2OC(C)(C)C(C)(C)O2)[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12]>>[C:11]([O:15][C:16]([N:18]1[CH2:19][CH:20]=[C:21]([C:2]2[CH:7]=[CH:6][CH:5]=[C:4]([N+:8]([O-:10])=[O:9])[CH:3]=2)[CH2:22][CH2:23]1)=[O:17])([CH3:14])([CH3:12])[CH3:13]Participants
3
Procedure
4-(3-Nitro-phenyl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester was prepared from 1-bromo-3-nitro-benzene (3.0 g, 15 mmol) and 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester (5.0 g, 16 mmol) in a manner analogous to Example 2c. Product isolated as a yellow oil (3.95 g, 88%). 1H NMR (400 MHz, CDCl3, δ, ppm): 8.23 (s, 1H), 8.11 (d, J=8.1 Hz, 1H), 7.69 (d, J=7.7 Hz, 1H), 7.51 (t, J=7.8 Hz, 1H), 6.20 (br s, 1H), 4.12 (s, 2H), 3.70-3.65 (m, 2H), 2.56 (s, 2H), 1.50 (s, 9H).
Sources & evidence
- ORD record
- ord-9a779235ac1f4b8b8e64108de88971b3
- Source dataset
- uspto-grants-2014_01
- Patent number
- US08633173B2
Reaction notes
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