A direct one-pot base-induced alkenylation of indolin-2-ones has been developed by using 6-aryl-4-methylthio-2H-pyran-2-one-3-carbonitriles. Different bases such as MeONa, NaH and t-BuONa have been used to optimize the reaction conditions to obtain the desired product. NaH in THF was found to be the most suitable for the alkenylation of indolin-2-ones. Reaction in the presence of other bases led to the formation of 1-aryl-3-methoxy/methylthio-5H-dibenzo[d,f][1,3]diazepin-6(7H)-ones. Quantum chemical calculations have been performed to explain the nature of the weak noncovalent interactions operating in the supramolecular architectures of alkenylated indoline-2-ones and to explain the relative stability of one of the tautomers with respect to the others.
已开发了一种直接的一锅法碱诱导的
吲哚啉-2-酮烯烃化反应,使用了6-芳基-4-甲
硫基-2
H-
吡喃-2-酮-3-碳腈。不同的碱如MeONa、NaH和
t-BuONa被用来优化反应条件以获得期望的产物。在THF中使用NaH被发现是最适合
吲哚啉-2-酮的烯烃化反应。在其他碱的存在下反应导致形成了1-芳基-3-甲氧基/甲
硫基-5
H-二苯并[
d,f][1,3]二氮杂
丙烯-6(7
H)-酮。进行了量子
化学计算来解释在烯基化
吲哚啉-2-酮的超分子结构中起作用的弱非共价相互作用的性质,并解释其中一种互变异构体相对于其他互变异构体的相对稳定性。