A Simple Key For indazole protecting group Unveiled
In the next stage, numerous unsymmetrical azobenzenes have been screened as substrates, as well as products 43a–d and 43a’–43d’ had been received (Scheme 13). Notably, the steric setting of the azobenzene orients the formation of preferred products 43e–file. The substrate scope of the reaction was more expanded to trifluoroacetaldehyde et