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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 555818Generated: October 31, 2026

O-Phenylenediamine → HCID 46208939, compound

https://huagongshe.com/reaction/555818

Reaction equation

Participants

RoleNameHCIDCharge
ReactantO-PhenylenediamineHCID 7243—
ReactantTetrahydrofuranHCID 8028—
ReactantDicyclohexylcarbodiimideHCID 10868—
ReactantHCID 59351155HCID 59351155—
SolventDichloromethaneHCID 6344—
ProductHCID 46208939HCID 46208939—

Reaction Conditions

Temperature75 °C

Reaction Steps

The mixture of 2-chloro-3-(4-isothiocyanatophenoxy)pyrazine (190 mg, 721 mmol), benzene-1,2-diamine (93.5 mg, 865 μmol) and N,N′-dicyclohexylcarbodiimide (223 mg, 1081 μmol) in THF (1.5 ml) was heated at 75° C. for 1.5 hrs. The mixture was cooled to room temperature, diluted with DCM and absorbed onto silica for purification using a 20-100% EtOAc/hexanes gradient to give the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08053438B2
Source datasetuspto-grants-2011_11
ORD IDord-8bbd101189f044efbf5c344e5df0b1cc
Source noteuspto-grants-2011_11