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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 570921Generated: October 24, 2026

Temozolomide → 3-Methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbothioamide

https://huagongshe.com/en/reaction/570921

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTemozolomideHCID 5394—
Reactant2,4-Bis(4-phenoxyphenyl)-2,4-dithioxo-1,3,2,4-dithiadiphosphetaneHCID 11813414—
SolventDichloromethaneHCID 6344—
Product3-Methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbothioamideHCID 3352880—

Reaction Steps

A mixture of temozolomide (3 g, 15.5 mmol) and Belleau's reagent (4.49 g, 8.5 mmol) was refluxed in DCM (80 mL) overnight. The reaction was quenched with water and the precipitate was filtered and washed with diethyl ether to give the pure title compound as an orange solid. (2.75 g, 84%). δH, (DMSO-d6): 9.92 (1H, s), 9.45 (1H, s), 8.81 (1H, s), 3.85 (3H, s).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09024018B2
Source datasetuspto-grants-2015_05
ORD IDord-25cdbd6d9c284c5b9de55719f0c358de
Source noteuspto-grants-2015_05