We report a two-step synthesis of polysubstituted fluorenones by condensation of malononitrile with aromaticaldehydes and methylketones or with β-aryl-α,β-unsaturated carbonyl compounds, aldehydes or ketones. The yields of the fluorenone systems depend on the nature of the substitution on the aromatic rings.
Amphiphilic Indoles as Efficient Phase‐Transfer Catalysts for Bromination in Water
作者:Qingyu Zhang、Yongyuan Xu、Xiaochen Liang、Zhihai Ke
DOI:10.1002/cssc.202200574
日期:2022.6.22
Just add water: Under the phase-transfer catalysis of amphiphilic indoles, an efficient and environmentally friendly bromination in water is developed. As test reactions, hydroxybromination of olefins and aromatic bromination are conducted.