How is 3-{3-[{[(7S)-3,4-Dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl}(methyl)amino]propyl}-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-3-benzazepin-2-one (CAS: 155974-00-8) typically synthesized?

This compound is synthesized via a multi-step process involving the formation of a key intermediate, which is then reacted with a diamine derivative. The synthesis requires the use of protecting groups and selective deprotection. The reaction is typically catalyzed by a transition metal complex and proceeds with good yield and selectivity.