Multicomponent Synthesis of Isoindolinone Frameworks via Rh<sup>III</sup>-Catalysed in situ Directing Group-Assisted Tandem Oxidative Olefination/Michael Addition
作者:Liang Wang、Xi Liu、Jian-biao Liu、Jun Shen、Qun Chen、Ming-yang He
DOI:10.1002/asia.201800120
日期:2018.4.4
A RhIII‐catalysed three‐component synthesis of isoindolinone frameworks via direct assembly of benzoyl chlorides, o‐aminophenols and activated alkenes has been developed. The process involves in situ generation of o‐aminophenol (OAP)‐based bidentate directing group (DG), RhIII‐catalysed tandem ortho C−H olefination and subsequent cyclization via aza‐Michael addition. This protocol exhibits good chemoselectivity
An amido-directing regioselective and nucleophilic halogenation reaction of electron-rich amidophenols was realized in the presence of Fe(III) reagents. Halides could be sequentially introduced to specific positions to form mono-, di- and mixed di- halogenated amidophenols mostly in one-pot manner.
HEAT-SENSITIVE SUBLIMATION TRANSFER CYAN DYE AND TRANSFER SHEET
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0443045A1
公开(公告)日:1991-08-28
A heat-sensitive sublimation transfer cyan dye represented by general formula (I), wherein R₁ is a hydrogen atom, an alkyl group, an alkoxy group, an alkylcarbonylamino group, a formylamino group or a halogen atom and R₂ and R₃ are each an alkyl group, an alkenyl group, an alkoxyalkyl group, an aralkyl group, an aryl group, a halogenoalkyl group or a cyanoalkyl group, provided that they may be combined to each other to form a ring, and X is any one of groups (a), (b) and (c), and a heat-sensitive sublimation transfer sheet comprising at least one of said dyes.