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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1482992Generated: October 30, 2026

Water → HCID 89816044, compound

https://huagongshe.com/reaction/1482992

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantDiisopropylethylamineHCID 81531—
ReactantEthyl 2-chloro-4-(trifluoromethyl)pyrimidine-5-carboxylateHCID 2780355—
Reactant(R)-methyl 1-isopropyl-7-(methylsulfonyl)-1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-a]pyrazine-8-carboxylateHCID 89815671—
SolventIsopropanolHCID 3776—
SolventDichloromethaneHCID 6344—
ProductHCID 89816044HCID 8981604457.8%

Reaction Conditions

Temperature60 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09416135B2
Source datasetuspto-grants-2016_08
ORD IDord-9d65903ace62456a8ec274522d2da6e0
Source noteuspto-grants-2016_08