Treatment of benzothiazine 24 with excess amounts of n-BuLi followed by trapping with selected electrophiles afforded products that suggested the formation of dilithio species. Interestingly, however, the scope of the electrophilic trapping was rather limited, electrophilic sources of halogens and disulfides functioning nearly uniquely and competent electrophilic trapping agents in the process.
MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES
申请人:Merck Patent GmbH
公开号:US20220416172A1
公开(公告)日:2022-12-29
The present invention relates to an organic electroluminescent device comprising a benzothiazine derivative and it also relates to specific benzothiazine derivatives.