Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Water | HCID 962 | — |
| Reactant | Diisopropylethylamine | HCID 81531 | — |
| Reactant | Ethyl 2-chloro-4-(trifluoromethyl)pyrimidine-5-carboxylate | HCID 2780355 | — |
| Reactant | (R)-methyl 1-isopropyl-7-(methylsulfonyl)-1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-a]pyrazine-8-carboxylate | HCID 89815671 | — |
| Solvent | Isopropanol | HCID 3776 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 89816044 | HCID 89816044 | 57.8% |
Reaction Steps
To a solution of (R)-methyl 1-isopropyl-7-(methylsulfonyl)-1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-a]pyrazine-8-carboxylate (80 mg, 0.228 mmol) in iPrOH (2 mL) and DCM (1 mL) was added ethyl 2-chloro-4-(trifluoromethyl)pyrimidine-5-carboxylate (174 mg, 0.684 mmol) and DIEA (177 mg, 1.37 mmol). The mixture was stirred at 60° C. overnight. Water (5 mL) was added to the mixture and the aqueous layer was extracted with EtOAc (2×10 mL). The combined organic layers were washed with water (2×10 mL) and brine, dried over anhydrous Na2SO4, filtered and concentrated under vacuum. The residue was purified by preparative TLC to afford (R)-methyl 2-(5-(ethoxycarbonyl)-4-(trifluoromethyl)pyrimidin-2-yl)-1-isopropyl-7-(methylsulfonyl)-1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-a]pyrazine-8-carboxylate (75 mg, 57.8% yield) as a yellow solid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09416135B2 |
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| Source dataset | uspto-grants-2016_08 |
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| ORD ID | ord-9d65903ace62456a8ec274522d2da6e0 |
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| Source note | uspto-grants-2016_08 |
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