Cesium carbonate → 3-[2-(2-Ethylbenzoimidazol-1-yl)-4-morpholin-4-ylthieno[3,2-d]pyrimidin-6-ylmethylene]azetidine-1-carboxylic acid tert-butyl ester

HRID 1922789Notes

Reaction equation

HRID 1922789 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:11][C:10](=[CH:12][C:13]2[S:21][C:20]3[C:19]([N:22]4[CH2:27][CH2:26][O:25][CH2:24][CH2:23]4)=[N:18][C:17](Cl)=[N:16][C:15]=3[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:29]([C:31]1[NH:32][C:33]2[CH:39]=[CH:38][CH:37]=[CH:36][C:34]=2[N:35]=1)[CH3:30].CC(C1C=C(C(C)C)C(C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)=C(C(C)C)C=1)C.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.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]>[C:1]([O:5][C:6]([N:8]1[CH2:11][C:10](=[CH:12][C:13]2[S:21][C:20]3[C:19]([N:22]4[CH2:27][CH2:26][O:25][CH2:24][CH2:23]4)=[N:18][C:17]([N:32]4[C:33]5[CH:39]=[CH:38][CH:37]=[CH:36][C:34]=5[N:35]=[C:31]4[CH2:29][CH3:30])=[N:16][C:15]=3[CH:14]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

7

Reactant 4

HCID 10796Cesium carbonateHCID 158072-EthylbenzimidazoleHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 596057503-(2-Chloro-4-morpholin-4-ylthieno[3,2-d]pyrimidin-6-ylmethylene)azetidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 596056083-[2-(2-Ethylbenzoimidazol-1-yl)-4-morpholin-4-ylthieno[3,2-d]pyrimidin-6-ylmethylene]azetidine-1-carboxylic acid tert-butyl esterYield 112.2%

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
110 °C

Procedure

A mixture of 3-(2-chloro-4-morpholin-4-ylthieno[3,2-d]pyrimidin-6-ylmethylene)azetidine-1-carboxylic acid tert-butyl ester (1.1 g, 2.51 mmol), 2-ethylbenzimidazole (400 mg, 2.74 mmol), tris(dibenzylideneacetone)dipalladium (115 mg, 0.13 mmol), XPhos (240 mg, 0.50 mmol) and Cs2CO3 (1.25 g, 3.84 mmol) in dioxane (25 mL) was purged with argon then heated at 110° C. for 16 h. The reaction mixture was filtered through Celite®, washing with DCM, and the filtrate concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, MeOH:DCM, 0-10%) affording the title compound as an orange solid (1.5 g, quant.). LCMS (method A): RT 3.40 min [M+H]+ 533.4

Workup

  1. customwas purged with argon
  2. filtrationThe reaction mixture was filtered through Celite®
  3. washwashing with DCM
  4. concentrationthe filtrate concentrated in vacuo
  5. customThe resulting residue was purified by column chromatography (Si—PCC, MeOH:DCM, 0-10%)

Sources & evidence

ORD record
ord-04900977e226495c885d5a7c6b31c4e9
Source dataset
uspto-grants-2012_05
Patent number
US08173650B2

Reaction notes

Loading…