Titanium Tetrachloride Induced Fries Rearrangement: A New Route to Disubstituted 2′- Hydroxypropiophenones
作者:Robert Martin、Pierre Demerseman
DOI:10.1055/s-1989-27134
日期:——
Fries rearrangement of some dialkylphenyl propionates with titanium tetrachloride proves to be a convenient route to hindered dialkyl 2′-hydroxypropiophenones. The sequential use of soft titanium tetrachloride to perform the Fries rearrangement followed by hard aluminum chloride to achieve the elimination of a protecting tert-butyl group allows the synthesis of some previously unknown 3′,6′- and 5′,6′-dialkyl-2-hydroxypropiophenones.
Esters containing aromatic groups as solvents for organic electronic formulations
申请人:Merck Patent GmbH
公开号:US11171294B2
公开(公告)日:2021-11-09
The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise (A) at least one specific ester solvent containing an aromatic group and (B) at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earth metals, lanthanides and actinides.