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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 337157Generated: October 29, 2026

Carbon tetrabromide → HCID 66688713, compound

https://huagongshe.com/reaction/337157

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbon tetrabromideHCID 11205—
ReactantTriphenylphosphineHCID 11776—
ReactantHCID 66689246HCID 66689246—
SolventTetrahydrofuranHCID 8028—
ProductHCID 66688713HCID 6668871329.8%

Reaction Conditions

Temperature0 °C

Reaction Steps

A solution of N-cyclopropyl-3-fluoro-5-[3-({1-[2-(3-hydroxypropyl)phenyl]-1-methylethyl}amino)-2-oxopyrazin-1(2H)-yl]-4-methylbenzamide (Example 323h) (0.4 g) dissolved in THF (10 mL) was treated with carbon tetrabromide (0.277 g) under nitrogen. The resulting mixture was cooled to 0° C. before adding triphenylphosphine (0.219 g). The reaction mixture was stirred at room temperature for 16 h. The reaction mixture was evaporated and the residue purified (SiO2 chromatography eluting with 50% DCM in ethyl acetate) to give the subtitle compound as a solid (0.135 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08889692B2
Source datasetuspto-grants-2014_11
ORD IDord-1160a64fc8464a03a97f3da410cb5ca3
Source noteuspto-grants-2014_11