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 1896599Notes

Reaction equation

HRID 1896599 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-b63f70a7c500402fac95d2e27b23b7d5
Source dataset
uspto-grants-2013_08
Patent number
US08518970B2

Reaction notes

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