Cesium carbonate → tert-butyl (5-methyl-1,3,4-thiadiazol-2-yl)methyl(2-methyl-6-(((1S,2S)-2-(5-methyl pyridin-2-yl)cyclopropyl)methoxy)-3-oxo-2,3-dihydropyridazin-4-yl)carbamate

HRID 530789Notes

Reaction equation

HRID 530789 reaction equation
Br[C:2]1[C:3](=[O:21])[N:4]([CH3:20])[N:5]=[C:6]([O:8][CH2:9][C@H:10]2[CH2:12][C@@H:11]2[C:13]2[CH:18]=[CH:17][C:16]([CH3:19])=[CH:15][N:14]=2)[CH:7]=1.[CH3:22][C:23]1[S:27][C:26]([CH2:28][NH:29][C:30](=[O:36])[O:31][C:32]([CH3:35])([CH3:34])[CH3:33])=[N:25][N:24]=1.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C([O-])([O-])=O.[Cs+].[Cs+]>C1(C)C=CC=CC=1.CCOC(C)=O.CC([O-])=O.CC([O-])=O.[Pd+2]>[CH3:22][C:23]1[S:27][C:26]([CH2:28][N:29]([C:2]2[C:3](=[O:21])[N:4]([CH3:20])[N:5]=[C:6]([O:8][CH2:9][C@H:10]3[CH2:12][C@@H:11]3[C:13]3[CH:18]=[CH:17][C:16]([CH3:19])=[CH:15][N:14]=3)[CH:7]=2)[C:30](=[O:36])[O:31][C:32]([CH3:34])([CH3:33])[CH3:35])=[N:25][N:24]=1

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 634876Binap, (A+-)-HCID 59892191Tert-butyl ((5-methyl-1,3,4-thiadiazol-2-yl)methyl)carbamateHCID 904543854-bromo-2-methyl-6-(((1S,2S)-2-(5-methylpyridin-2-yl)cyclopropyl)methoxy)pyridazin-3(2H)-one

Product 1

HCID 131735649tert-butyl (5-methyl-1,3,4-thiadiazol-2-yl)methyl(2-methyl-6-(((1S,2S)-2-(5-methyl pyridin-2-yl)cyclopropyl)methoxy)-3-oxo-2,3-dihydropyridazin-4-yl)carbamate

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 1140TolueneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
85 °C

Procedure

A mixture of 4-bromo-2-methyl-6-(((1S,2S)-2-(5-methylpyridin-2-yl)cyclopropyl)methoxy)pyridazin-3(2H)-one (5) (90 mg, 0.26 mmol), tert-butyl (5-methyl-1,3,4-thiadiazol-2-yl)methylcarbamate (6) (119 mg, 0.52 mmol), Pd(OAc)2 (9 mg, 0.052 mmol), BINAP (36 mg, 0.057 mmol) and Cs2CO3 (127 mg, 0.39 mmol) in toluene (4 mL) under N2 was heated at 85° C. for 20 h. After cooled to rt, The mixture was diluted with EtOAc (20 mL), washed with H2O and brine, dried over MgSO4, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel, eluting with PE/EA (1/2) to give the title compound as a oil.

Workup

  1. temperatureAfter cooled to rt
  2. washwashed with H2O and brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by column chromatography on silica gel
  7. washeluting with PE/EA (1/2)

Sources & evidence

ORD record
ord-f5042f8e75db4d319361620cf8a02e65
Source dataset
uspto-grants-2016_05
Patent number
US09353104B2

Reaction notes

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