A new preparative procedure for 5-aryl- or 5-decylquinolin-8-ols was developed. The key step of the procedure is the cross coupling of 8-benzyloxy-5-bromoquinoline with arylboronic acid or 9-decyl-9-borabicyclo[3.3.1]nonane (Suzuki reaction). Deprotection of the benzyloxy group was accomplished successfully by Pd/C catalyzed hydrogen transfer from cyclohexa-1,4-diene.
开发了一种新的制备5-芳基或5-癸基
喹啉-8-醇的程序。该程序的关键步骤是8-苄氧基-
5-溴喹啉与芳基
硼酸或9-癸基-
9-硼双环[3.3.1]壬烷(铃木反应)的交叉偶联反应。通过Pd/C催化下的环己-1,4-二烯氢转移成功地去除了苄氧基保护基。