反应详情

This compound was prepared from 1 g of 5-(2-amino-3-chlorophenyl)tetrazole, 0.45 g of NaNO2, and concentrated HCl by the procedure described in Example 1. The reaction mixture was made basic with aqueous NaHCO3 and extracted with chloroform as before. The combined and dried extracts were concentrated under a stream of nitrogen at room temperature. The residue was washed with hexane and air dried to yield 0.85 g of a cream colored solid identified by thin layer chromatographic analysis and infrared absorption analyses as the essentially pure compound 7-chlorotetrazolo[4,5-C][1,2,3]benzotriazine.

1. extractionextracted with chloroform as before
2. customdried extracts
3. concentrationwere concentrated under a stream of nitrogen at room temperature
4. washThe residue was washed with hexane and air
5. customdried