Stannous Chloride → HCID 136395955, compound

Participants

Reaction Steps

672 mg (2.98 mmol) of tin dichloride were dissolved in 3.4 ml of conc. hydrochloric acid at 80° C. 200 mg (0.71 mmol) of 8-chloro-9-nitro-2,3,5,6-tetrahydro-1,2,4-triazolo[4,3-c]quinazoline-3,5-dione were added portionwise thereto. After heating at reflux for 2 hrs. the precipitate was filtered off, washed with water and dried in a vacuum. 137 mg (67%) of 9-amino-8-chloro-2,3,5,6-tetrahydro-1,2,4-triazolo[4,3-c]quinazoline-3,5-dione hydrochloride were obtained as white crystals;

Provenance & Evidence