Presentation of a method for producing a 5-methylindoline represented by the formula:
(wherein R1 is a hydrogen atom or a lower alkyl group), which comprises catalytically hydrogenating a 1-(substituted)benzyl-5-formylindoline represented by the formula:
(wherein R1 is a hydrogen atom or a lower alkyl group, and R2 is a hydrogen atom, a lower alkyl group or a lower alkoxy group) in the presence of an inert solvent and a palladium catalyst.
提出一种生产由式表示的
5-甲基吲哚啉的方法:
(其中R1为氢原子或低级烷基)的方法,该方法包括催化氢化由式表示的1-(取代)苄基-5-甲酰基
吲哚啉(其中R1为氢原子或低级烷基,R2为氢原子、低级烷基或低级烷基):
(其中 R1 为氢原子或低级烷基,R2 为氢原子、低级烷基或低级烷氧基),在惰性溶剂和
钯催化剂存在下进行催化氢化。