210411-19-1Relevant articles and documents
Facile synthesis of novel 2-hydroxytetrazole derivatives via selective N-2 oxidation
Giles, Robert G.,Lewis, Norman J.,Oxley, Paul W.,Quick, John K.
, p. 6093 - 6094 (1999)
A highly selective oxidation of the sodium salt of ethyl tetrazole-5- carboxylate is reported which produces a novel class of hydroxytetrazole derivative which can then be converted to 2-hydroxytetrazole. A novel preparation of 1-hydroxytetrazole is also reported.
Process for the production of tetrazolylbenzopyrans
-
, (2008/06/13)
PCT No. PCT/EP97/07341 Sec. 371 Date Jul. 6, 1999 Sec. 102(e) Date Jul. 6, 1999 PCT Filed Dec. 30, 1997 PCT Pub. No. WO98/30559 PCT Pub. Date Jul. 16, 1998A process for preparing certain substituted benzopyran compounds of formula (I) is disclosed.