Interaction of 3-amino-2-carbamoyl-5,6-trimethylene- and 3-amino-2-carbamoyl-5, 6-hexamethylenethieno[2,3-b]pyridines with acetic anhydride
作者:L. A. Rodinovskaya、E. V. Belukhina、A. M. Shestopalov、V. P. Litvinov
DOI:10.1007/bf00699167
日期:1994.1
8 ~ > 2 + 3 + 4 OAcI f the maximum concentrations of the salt are used (-0.015 M), then the 7 ~ 8 equilibrium is shifted toward ion pair 7, and the reaction rate constant no longer depends on the additive concentration. In this case, the reaction products are formed from ion pair 7. The regiochemical data and the composition of the reaction products indicate that ion pair 7 has a more symmetric structure
8 ~ > 2 + 3 + 4 OAc 如果使用最大浓度的盐 (-0.015 M),则 7 ~ 8 平衡向离子对 7 移动,反应速率常数不再取决于添加剂浓度。在这种情况下,反应产物由离子对 7 形成。区域化学数据和反应产物的组成表明离子对 7 具有比离子 8 更对称的结构。反应速率由 Hg 浓度的变化决定(OCOCH3) 2 通过已知程序测量。2 反应产物与 NaBH 4 或钠汞齐脱汞后的组成用 GLC 分析。