Hydrochloric Acid → 1-Tetrazolylacetic acid

Temperature

55 °C

The title compound was prepared by a literature procedure* as follows: A mixture of sodium azide (10.5 g, 0.3 mol) and glacial acetic acid (125 ml) was blanketed with nitrogen and heated at 55° C. with stirring. After most of the solids had dissolved (15 min), glycine (18.75 g, 0.25 mol) and triethyl orthoformate (40 g, 0.27 mol) were added to the reaction mixture and heating at 55°-50° C. with stirring under nitrogen continued for 6 h. The reaction mixture was cooled to room temperature, acidified with concentrated hydrochloric acid (25 ml) and evaporated to dryers. The residue was extracted with ethyl acetate (4×100 ml) and the extracts evaporated to give 9.0 g (28%) of the title compound mp 121°-125° C. (lit. mp 125°-127° C.). 1Hmr (DMSO-d6) δ: 5.35 (s, 2H,--CH2 --) and 9.25 ppm (s, 1H, C5 --H).

1. customThe title compound was prepared by a literature procedure*
2. additionwere added to the reaction mixture
3. temperatureheating at 55°-50° C.
4. stirringwith stirring under nitrogen
5. temperatureThe reaction mixture was cooled to room temperature
6. customevaporated to dryers
7. extractionThe residue was extracted with ethyl acetate (4×100 ml)
8. customthe extracts evaporated

ORD record

ord-9eb8989bbc6a4331a891636ed45602f0

Source dataset

uspto-grants-1983_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04378314