However, common metal-catalyzed coupling reactions require a lot of steps to prepare the precursor, and sometimes even several steps of reaction are required to obtain the required precursor. .
But common metal catalytic coupled reactions require a lot of steps to prepare for the front system, and sometimes even several steps to get the required preconceptions.
However, the common metal catalyzed coupling reactions need to spend a lot of steps on the preparation of the precursor, sometimes even several steps are needed to get the desired precursor..