Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1489582Generated: November 1, 2026

Hydrochloric Acid → HCID 18184406, compound

https://huagongshe.com/reaction/1489582

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant3-BromoanilineHCID 11562—
ReactantHCID 18184384HCID 18184384—
SolventTetrahydrofuran 2-propanolHCID 22597222—
ProductHCID 18184406HCID 1818440645.5%

Reaction Steps

A mixture of 4-chlorooxazolo[5,4-g]quinazoline (0.24 g, 1.16 mmol) and 3-bromoaniline (0.25 mL, 2.33 mmol) in a THF/propan-2-ol mixture (1:1, 40 mL) containing a trace of concentrated HCl is heated under reflux for 15 min, then concentration to dryness under reduced pressure. The residue is triturated with EtOAc, and then partitioned between saturated aqueous NaHCO3 and EtOAc. Workup of the organic portion gives 4-(3-bromoanilino)oxazolo[5,4-g]quinazoline (0.18 g, 33%) as a yellow powder, mp (MeOH) 232 ° C. (dec.).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05679683
Source datasetuspto-grants-1997_10
ORD IDord-17a7bb22b38543a1ad8193a76250bf62
Source noteuspto-grants-1997_10