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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1421162Generated: November 1, 2026

Methanol → HCID 18780288, compound

https://huagongshe.com/reaction/1421162

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantHexamethyldisilazaneHCID 13838—
ReactantHCID 18780267HCID 18780267—
SolventChloroformHCID 6212—
ProductHCID 18780288HCID 1878028831.7%

Reaction Conditions

Temperature60 °C

Reaction Steps

A solution of 0.411 g of 3-[1-(3-acetoxypropyl)-3-indolyl]-4-(2-nitrophenyl)furan-2,5-dione in 50 ml of chloroform was treated with a mixture of 1.53 g of 1,1,1,3,3,3-hexamethyldisilazane and 0.3 g of methanol and the mixture was heated at 60° C. for 1 hour. A further 1.53 g of hexamethyldisilazane and a further 0.3 g of methanol were added and the heating was continued overnight before adding further 1.53 g of hexamethyldisilazane and 0.3 g of methanol. The mixture was heated for a further 1 hour. The solvents were removed under reduced pressure and the residue was chromatographed on silica gel with 5% methanol in dichloromethane to give 130 mg of 3-[1-(3-acetoxypropyl)-3-indolyl]-4-(2-nitrophenyl)-1H-pyrrole-2,5-dione, m.p. 77°-78° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUSRE036736
Source datasetuspto-grants-2000_06
ORD IDord-12b481bf494a4b46a436a1186039a7fa
Source noteuspto-grants-2000_06