preparation | 1-amino isoquinoline can also be prepared by rearrangement reaction of corresponding carboxylic acid derivatives. at this time, the N-2 should be protected in advance and protected after the reaction is completed. the steps are complicated and the yield is low. The preparation of common 6-bromo-1-aminoisoquinoline is made with 6-bromo-1-chloroisoquinoline as the starting material, which is prepared by reaction and hydrolysis reaction with p-methoxybenzylamine [1]. The synthesis roadmap is as follows: Figure 1 The synthesis roadmap of 6-bromo-1-aminoisoquinoline |