41194-21-2Relevant academic research and scientific papers
Phthalide synthesis through dehydrogenated lactonization of the C(sp3)-H bond by photoredox catalysis
Cai, Shunyou,Cai, Zhixiong,Chen, Shanyi,Huang, Mingqiang,Lai, Qihong,Lin, Yulin,Liu, Chao,Liu, Hui
, p. 8212 - 8216 (2021/10/29)
A practical and efficient method is established for the direct oxidative lactonization of the C(sp3)-H bonds relying on visible-light-induced photoredox catalysis. This protocol expediently allows the delivery of diverse phthalides using oxygen as the sole terminal oxidant under metal-free conditions at room temperature. Notably, the choice of an appropriate hydrogen atom transfer (HAT) cocatalyst is revealed to be critical for the success of this process.
Reaction de Friedel et Crafts de derives aromatiques sur le composes dicarbonyles-1,4 ethyleniques-2,3. V.Reactions des hydroxyphtalides et hydroxytetrahydrophtalides
Canevet, Jean-Claude,Guilloton, Odette
, p. 96 - 98 (2007/10/02)
In the presence of sulfuric acid, 3-hydroxyphtalides a, b, and c react with anisol or m-dimethoxybenzene.Aromatic electrophilic substitution takes place and the corresponding 3-arylphtalides 1-5 are obtained.When the other substituant in position 3 is H,
