4-Nitrophenyl benzo[d]thiazol-2-ylcarbamate → Methyl 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinate

HRID 2178249Notes

Reaction equation

HRID 2178249 reaction equation
[O:1]([CH2:8][CH2:9][O:10][C:11]1[C:12]([C:27]([O:29][CH3:30])=[O:28])=[N:13][C:14]([C:17]2[CH:26]=[C:25]3[C:20]([CH2:21][CH2:22][CH2:23][NH:24]3)=[CH:19][CH:18]=2)=[CH:15][CH:16]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[S:31]1[C:35]2[CH:36]=[CH:37][CH:38]=[CH:39][C:34]=2[N:33]=[C:32]1[NH:40][C:41](=O)[O:42]C1C=CC([N+]([O-])=O)=CC=1>C(#N)C>[S:31]1[C:35]2[CH:36]=[CH:37][CH:38]=[CH:39][C:34]=2[N:33]=[C:32]1[NH:40][C:41]([N:24]1[C:25]2[C:20](=[CH:19][CH:18]=[C:17]([C:14]3[N:13]=[C:12]([C:27]([O:29][CH3:30])=[O:28])[C:11]([O:10][CH2:9][CH2:8][O:1][C:2]4[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=4)=[CH:16][CH:15]=3)[CH:26]=2)[CH2:21][CH2:22][CH2:23]1)=[O:42]

Participants

4

Reactant 2

HCID 594186764-Nitrophenyl benzo[d]thiazol-2-ylcarbamateHCID 59418754Methyl 3-(2-phenoxyethoxy)-6-(1,2,3,4-tetrahydroquinolin-7-yl)picolinate

Product 1

HCID 59418694Methyl 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinateYield 98.2%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

Methyl 3-(2-phenoxyethoxy)-6-(1,2,3,4-tetrahydroquinolin-7-yl)picolinate (27C) (81 mg, 0.2 mmol) and 4-nitrophenyl benzo[d]thiazol-2-ylcarbamate (19) (127 mg, 0.4 mmol) were heated to reflux in acetonitrile (5 mL) for 24 hours. After cooling, the mixture was concentrated under reduced pressure and purified by column chromatography on silica gel eluting with a gradient of PE (100%) to PE/EtOAc (4:6), to provide 114 mg (97%) of the desired product methyl 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinate (27D). 1H NMR (300 MHz, CDCl3) δ8.12 (1H, s), 7.85 (1H, d), 7.73 (1H, m), 7.44 (3H, m), 7.29 (4H, m), 7.09 (1H, m), 6.94 (3H, m), 4.44 (2H, m), 4.37 (2H, m), 3.88 (2H, m), 3.78 (3H, m), 2.74 (2H, m), 2.00 (2H, m).

Workup

  1. temperatureAfter cooling
  2. concentrationthe mixture was concentrated under reduced pressure
  3. custompurified by column chromatography on silica gel eluting with a gradient of PE (100%) to PE/EtOAc (4:6)

Sources & evidence

ORD record
ord-f5936334093a4e4f84f219bdee33241f
Source dataset
uspto-grants-2015_06
Patent number
US09067928B2

Reaction notes

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