There exist three possible patterns for the reaction of cyclic 2-oxazolidinethione and 2-benzoxazolidinethione with arynes, namely (a) S-arylation, (b) N-arylation, and (c) aryne insertion into the thiocarbonyl group (CS). Our studies demonstrate that S-arylation wins out affording S-aryl dihydrooxazoles. In contrast, for related reactions of cyclic 2-benzoxazolinone and 2-benzimidazolinone with arynes
环状2-
恶唑烷
硫酮和2-
苯并恶唑烷
硫酮与
芳烃的反应存在三种可能的模式,即(a)S-芳基化,(b)N-芳基化,和(c)芳基插入
硫代羰基(CS )中。我们的研究表明,小号-arylation胜出,得到小号芳dihydrooxazoles。相反,对于相关的反应的环状2-
苯并恶唑啉
酮和2-
苯并咪唑啉
酮与arynes,发现Ñ -arylation outcompetes ö -arylation和芳炔插入到C O基团,得到ñ -芳基2-benzoxazolinones和Ñ -芳基2 -
苯并咪唑啉
酮。