Use of selected 1,2-dihydro-1,2,4,5-tetrazines as oxygen-scavenging
申请人:Olin Corporation
公开号:US04389327A1
公开(公告)日:1983-06-21
Disclosed is a method for removing dissolved oxygen from a liquid (e.g., aqueous) system which comprises adding to said liquid system an effective amount of an oxygen-scavenging chemical selected from 1,2-dihydro-1,2,4,5-tetrazines of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from lower alkyl groups having 1 to 4 carbon atoms and phenyl.
First representatives of <i>C</i>-glycosyl 1,2,4,5-tetrazines: synthesis of 3-β-<scp>d</scp>-glucopyranosyl 1,2,4,5-tetrazines and their transformation into 3-β-<scp>d</scp>-glucopyranosyl pyridazines
applications e.g. in heterocyclic syntheses and recently in bioorthogonal chemistry. C-Glycopyranosyl tetrazines are unknown in the literature, therefore, we have started to study their synthesis. In this paper ring closing reactions leading to s-tetrazines have been investigated with suitable β-D-glucopyranosyl precursors and the feasible transformations have been identified. In addition, the obtained