Water → 6-(1-(Benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinic acid

HRID 1896600Notes

Reaction equation

HRID 1896600 reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([N:13]1[C:22]2[C:17](=[CH:18][CH:19]=[C:20]([C:23]3[N:28]=[C:27]([C:29]([O:31]C)=[O:30])[C:26]([O:33][CH2:34][CH2:35][O:36][C:37]4[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=4)=[CH:25][CH:24]=3)[CH:21]=2)[CH2:16][CH2:15][CH2:14]1)=[O:12].[Li+].[OH-].O>CO.C(OCC)C>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([N:13]1[C:22]2[C:17](=[CH:18][CH:19]=[C:20]([C:23]3[N:28]=[C:27]([C:29]([OH:31])=[O:30])[C:26]([O:33][CH2:34][CH2:35][O:36][C:37]4[CH:38]=[CH:39][CH:40]=[CH:41][CH:42]=4)=[CH:25][CH:24]=3)[CH:21]=2)[CH2:16][CH2:15][CH2:14]1)=[O:12]

Participants

6

Reactant 3

HCID 962WaterHCID 3939Lithium HydroxideHCID 59418694Methyl 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinate

Product 1

HCID 468410576-(1-(Benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinic acidYield 75%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 3283Diethyl EtherSolvent

Procedure

The title compound 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinic acid (27) was prepared by the following procedure: A mixture of methyl 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinate (27D) (114 mg, 0.20 mmol) and LiOH (18 mg, 0.75 mmol) was stirred in MeOH (3 mL) and water (1 mL) for 20 hours. The mixture was diluted with diethyl ether (2 mL) and the aqueous layer was separated and acidified with 1M HCl. The precipitate was filtered, washed with EtOAc, and dried to provide 83 mg (75%) of the desired product 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinic acid (27): 1H NMR (300 MHz, DMSO-d6) δ 7.98 (1H, d), 7.77 (2H, d), 7.65 (1H, m), 7.38-7.18 (6H, m), 6.99-6.91 (4H, m), 4.46 (2H, m), 4.31 (2H, m), 3.93 (2H, m), 2.79 (2H, m), 1.90 (2H, m). LC/MS (APCI): m/z 567.2 (M+H).

Workup

  1. customThe title compound 6-(1-(benzo[d]thiazol-2-ylcarbamoyl)-1,2,3,4-tetrahydroquinolin-7-yl)-3-(2-phenoxyethoxy)picolinic acid (27) was prepared by the following procedure
  2. customthe aqueous layer was separated
  3. filtrationThe precipitate was filtered
  4. washwashed with EtOAc
  5. customdried

Sources & evidence

ORD record
ord-da9aec2f9533476a8048f0905ecf06bb
Source dataset
uspto-grants-2013_08
Patent number
US08518970B2

Reaction notes

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