Methyl 3-mercaptopropionate → Methyl 3-(6-(4-methylthiazol-2-ylamino)-5-phenoxypyridin-3-ylthio)propanoate

HRID 335081Notes

Reaction equation

HRID 335081 reaction equation
Br[C:2]1[CH:3]=[C:4]([O:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C:5]([NH:8][C:9]2[S:10][CH:11]=[C:12]([CH3:14])[N:13]=2)=[N:6][CH:7]=1.C(N(C(C)C)C(C)C)C.[SH:31][CH2:32][CH2:33][C:34]([O:36][CH3:37])=[O:35]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1.O1CCOCC1>[CH3:14][C:12]1[N:13]=[C:9]([NH:8][C:5]2[N:6]=[CH:7][C:2]([S:31][CH2:32][CH2:33][C:34]([O:36][CH3:37])=[O:35])=[CH:3][C:4]=2[O:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[S:10][CH:11]=1

Participants

7

Reactant 3

HCID 18050Methyl 3-mercaptopropionateHCID 81531DiisopropylethylamineHCID 247655435-Bromo-N-(4-methylthiazol-2-yl)-3-phenoxypyridin-2-amine

Product 1

HCID 24765636Methyl 3-(6-(4-methylthiazol-2-ylamino)-5-phenoxypyridin-3-ylthio)propanoateYield 84.6%

Reagents, catalysts & solvents 3

HCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)CatalystHCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A 25 mL round-bottomed flask was charged with 5-bromo-N-(4-methylthiazol-2-yl)-3-phenoxypyridin-2-amine (350 mg, 0.966 mmol), Pd2dba3 (22.1 mg, 0.024 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethyl-9H-xanthene (27.9 mg, 0.048 mmol), N-ethyl-N-isopropylpropan-2-amine (0.33 mL, 1.9 mmol), methyl 3-mercaptopropanoate (0.12 mL, 1.1 mmol), and dioxane (10 mL). The reaction mixture was heated to 100° C. under nitrogen for 2 hours. The reaction mixture was cooled to room temperature, filtered and concentrated. The residue was purified by silica gel chromatography (40% EtOAc in hexanes) to afford the title compound (328 mg, 84.5% yield) as a pale yellow solid. HCl salt made for characterization. 1H NMR (d6-DMSO) 8.18 (d, 1H), 7.45 (m, 2H), 7.36 (d, 1H), 7.22 (t, 1H), 7.13 (d, 2H), 6.79 (s, 1H), 3.55 (s, 3H), 3.07 (t, 2H), 2.57 (t, 2H), 2.29 (s, 3H); Mass spectrum (esi) m/z=402.2 (100)(M+H—HCl).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. filtrationfiltered
  3. concentrationconcentrated
  4. customThe residue was purified by silica gel chromatography (40% EtOAc in hexanes)

Sources & evidence

ORD record
ord-fc0600fe80174cd4b5b70f3b4ac7e357
Source dataset
uspto-grants-2014_11
Patent number
US08883828B2

Reaction notes

Loading…