A process for transforming a group >C═O (I) in a compound into a group >C═S (II) or into a tautomeric form of group (II) in a reaction giving a thionated reaction product, by use of crystalline P
2
S
5
.2 C
5
H
5
N as a thionating agent. A thionating agent which is crystalline P
2
S
5
.2 C
5
H
5
N.
一种将化合物中的羰基团(I)转化为
硫代基团(II)或其自身互变异构体的过程,通过使用晶体
P2S5.2
C5H5N作为
硫代化试剂,反应生成
硫代反应产物。所述
硫代化试剂为晶体 .2 。