申请人:Johns Brian Alvin
公开号:US08552187B2
公开(公告)日:2013-10-08
Processes are provided which create an aldehyde methylene, or hydrated or hemiacetal methylene attached to a heteroatom of a 6 membered ring without going through an olefinic group and without the necessity of using an osmium reagent. In particular, a compound of formula (I) can be produced from (II) and avoid the use of an allyl amine: (formulae I and II) where R, P1 P3, R3 and Rx are as described herein.
提供了一种制备与杂原子连接的6元环上的醛基亚甲基、水合醛基亚甲基或半缩醛基亚甲基的方法,不需要经过烯丙基基团,也不需要使用铂催化剂。特别地,可以从化合物(II)制备出式(I)的化合物,避免使用烯丙胺:(式(I)和式(II))其中R、P1、P3、R3和Rx的定义如本文所述。