The denitrosation of 3-t-butyl-1-methyl-1-nitrosothiourea(1) was retarded by β-, and γ-cyclodextrins(CDs) at pH 4.70. Decomposition of 1 in the presence of β-CD produced selectively 3-t-butyl-1-methylthiourea(1a), which was remarkably different from the product ratio in the absence of β-CD. These results may be caused by both the protective and the microsolvent effect of β-CD.
在 pH 值为 4.70 时,β- 和 γ-
环糊精(CD)可延缓 3-t-丁基-1-甲基-1-亚硝基
硫脲(1)的脱硝反应。在存在 β-CD 的情况下,1 的分解选择性地产生了 3-t-丁基-1-甲基
硫脲(1a),这与不存在 β-CD 时的产物比例明显不同。这些结果可能是由于 β-CD 的保护作用和微溶剂作用造成的。