Stable thioaldehydes: Synthesis, structure assignment, and stability of 6-amino-5-thioformyluracils
作者:Kosaku Hirota、Hironao Sajiki、Keiko Kubo、Masaru Kido、Kazuyuki Nakagawa
DOI:10.1016/0040-4020(96)00533-9
日期:1996.7
Stable 6-amino-5-thioformyluracils 3a-e were synthesized starting from 6-amino-1,3-disubstituted uracils 1a-e in 23–98 % yields. According to the x-ray crystal structure, although the thioaldehyde 3c possesses reasonable double-bond character of the C=S bond, the length of C=S bond of the thioaldehyde 3c is longer than those of the kinetically stabilized thioaldehydes due to the mesomeric effect of
稳定6-氨基-5- thioformyluracils 3A-E合成从6-氨基-1,3-二取代的尿嘧啶开始1A-E在23-98%的产率。根据X射线晶体结构,虽然硫醛3C拥有C = S键的合理双键字符时,硫醛的C = S键的长度3C是比那些动力学稳定的硫醛的较长由于内消旋6-氨基的作用。