中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-苯并噻吩-3-羧酸 | benzo[b]thiophene-3-carboxylic acid | 5381-25-9 | C9H6O2S | 178.211 |
3-甲醛苯并噻吩 | benzothiophene-3-carboxaldehyde | 5381-20-4 | C9H6OS | 162.212 |
A combined spectroscopic, synthetic, and apparative study has allowed a more detailed mechanistic rationalization of several recently reported eosin Y-catalyzed aromatic substitutions at arenediazonium salts. The operation of rapid acid–base equilibria, direct photolysis pathways, and radical chain reactions has been discussed on the basis of pH, solvent polarity, lamp type, absorption properties, and quantum yields. Determination of the latter proved to be an especially valuable tool for the distinction between radical chain and photocatalytic reactions.