Methanol → Ethyl 1-(5-(7-bromo-2-(3-ethylureido)benzo[d]thiazol-5-yl)pyrimidin-2-yl)-4-methylpiperidine-4-carboxylate

HRID 1399971Notes

Reaction equation

HRID 1399971 reaction equation
[Br:1][C:2]1[C:10]2[S:9][C:8]([NH:11][C:12]([NH:14][CH2:15][CH3:16])=[O:13])=[N:7][C:6]=2[CH:5]=[C:4](I)[CH:3]=1.[CH3:18][C:19]1([C:40]([O:42][CH2:43][CH3:44])=[O:41])[CH2:24][CH2:23][N:22]([C:25]2[N:30]=[CH:29][C:28](B3OC(C)(C)C(C)(C)O3)=[CH:27][N:26]=2)[CH2:21][CH2:20]1.CO.P([O-])([O-])([O-])=O.[K+].[K+].[K+]>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Br:1][C:2]1[C:10]2[S:9][C:8]([NH:11][C:12]([NH:14][CH2:15][CH3:16])=[O:13])=[N:7][C:6]=2[CH:5]=[C:4]([C:28]2[CH:27]=[N:26][C:25]([N:22]3[CH2:23][CH2:24][C:19]([CH3:18])([C:40]([O:42][CH2:43][CH3:44])=[O:41])[CH2:20][CH2:21]3)=[N:30][CH:29]=2)[CH:3]=1

Participants

7

Reactant 4

HCID 887MethanolHCID 62657Potassium Phosphate, TribasicHCID 578137231-(7-Bromo-5-iodobenzo[d]thiazol-2-yl)-3-ethylureaHCID 66976878Ethyl 4-methyl-1-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidin-2-yl)piperidine-4-carboxylate

Product 1

HCID 86663956Ethyl 1-(5-(7-bromo-2-(3-ethylureido)benzo[d]thiazol-5-yl)pyrimidin-2-yl)-4-methylpiperidine-4-carboxylateYield 41.2%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of Intermediate 3 (22.7 g, 53.2 mmol) and iv (20 g, 53.2 mmol) in 1,4-dioxane:MeOH (300:180 mL) was added potassium phosphate (17 g, 79 mmol) at RT. The resulting mixture was degassed for 15-20 min by purging N2 followed by the addition of Pd(PPh3)4 (6.1 g, 5.32 mmol). The reaction mixture was again degassed for another 15-20 min and then heated up to 80° C. for 5 h. The reaction mixture was cooled to RT, diluted with EtOAc (500 mL) and passed through celite bed. The filtrate was evaporated and the crude residue was purified by chromatography on silica eluting with 1.5% MeOH:DCM to obtain Intermediate 7 (12 g, 41%).

Workup

  1. customThe resulting mixture was degassed for 15-20 min
  2. customby purging N2
  3. customThe reaction mixture was again degassed for another 15-20 min
  4. temperatureThe reaction mixture was cooled to RT
  5. additiondiluted with EtOAc (500 mL)
  6. customThe filtrate was evaporated
  7. customthe crude residue was purified by chromatography on silica eluting with 1.5% MeOH

Sources & evidence

ORD record
ord-3e31e0b914d043148a4dd686dc4dc55a
Source dataset
uspto-grants-2014_12
Patent number
US08906902B2

Reaction notes

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