Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 84709Generated: October 29, 2026

Pyridine → HCID 57900472, compound

https://huagongshe.com/reaction/84709

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
Reactant2,4-DifluoroanilineHCID 9709—
ReactantHCID 57900471HCID 57900471—
Catalyst4-(Dimethylamino)pyridineHCID 14284—
SolventDichloromethaneHCID 6344—
ProductHCID 57900472HCID 5790047231%

Reaction Steps

To a reaction vial charged with 8-fluoro-4H-thieno[3,2-c]chromene-2-carbonyl chloride (0.120 g, 0.447 mmol) and 2,4-difluoroaniline (0.0959 g, 0.670 mmol) was added a catalytic amount of DMAP. Pyridine in methylene chloride (1.2 M, 1.49 mL) was added. The reaction was stirred at room temperature with LC/MS monitor. The reaction was complete in a couple hours. After aqueous work up, the reaction was concentrated in vacuo, taken into DMF at a concentrated of 100 mg/ml and purified by preparative RP-HPLC to give 163bp. Yield=31% of theoretical. MS: (ESI+)=376.4

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08846762B2
Source datasetuspto-grants-2014_09
ORD IDord-224fa7364aef4432bf3e754eeb32b113
Source noteuspto-grants-2014_09