芳烃的乙酰氧基化是一个重要的反应,也是化学中未满足的需求。我们报告了在三氟乙酸、乙酸和乙酸酐的无水环境下使用硝酸钠进行的无金属直接乙酰氧基化反应。芳烃(31 个实例)的氧化电位(E ox,单位为 V vs SCE)低于苯(2.48 V),以良好的产率和区域选择性被乙酰氧基化。提出了一种逐步的单电子转移机制。
The photo-fries rearrangement of 2,5-disubstituted phenyl acetates
作者:Rafael Suau、Gregorio Torres、Maria Valpuesta
DOI:10.1016/0040-4039(94)02447-j
日期:1995.2
In a homogeneous solution, the photo-Friesrearrangement of 2,5-disubstituted phenyl acetates gives ortho-hydroxyacetophenones as major photoproducts. The ortholpara ratio can be increased by using a highly viscous medium or restricted spaces such as those in zeolites. On the other hand, micellar solutions have little effect.
generation of aminobiphenyl palladacycle pre‐catalyst “G3‐Xantphos” enables functionalization of peptides containing cysteine in high yields. The conjugation (bioconjugation) occurs chemoselectively at roomtemperature under biocompatible conditions. Extension of the method to protein functionalization allows selective bioconjugation of the trastuzumab antibody.