申请人:Johns Brian Alvin
公开号:US20110263855A1
公开(公告)日:2011-10-27
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, P
1
P
3
, R
3
and R
x
are as described herein.
提供了一些过程,可以在不经过烯丙基团且不必使用锇试剂的情况下,创建连接到6元环中杂原子的醛亚甲基或水合物或半缩醛亚甲基。特别地,可以从(II)生产出式(I)的化合物,避免使用烯丙基胺:(式I和式II),其中R,P1P3,R3和Rx如本文所述。