produce 2-(1-pyrrolidinyl) (piperidino)-2-thiopyrans, 8a-c (8d-f), and a new type of rearrangement is observed. The 2-thiopyran, 9, is formed from 1b and ethyl 3-propiolate, which elucidates the mechanism. 1H and 13C NMR data of 6 and 7 are discussed.
的烯胺基-
硫酮,1C,与
丙烯腈和
2-氯丙烯腈发生反应在室温下,得到3,4-二氢-4-(1-
吡咯烷基)-2- -thiopyrans,4和5分别。之间的反应的1-芳基-3-(1-
吡咯烷基)(
哌啶子基)-apropene -1-
硫酮,1A-1C(1D-F ),和
乙炔二给出4-(1-
吡咯烷基)(
哌啶子基)-4 -
硫吡喃,6a-c(6d-f)。化合物1a-c(1d-f)和
丙酸乙酯产生2-(1-
吡咯烷基)(
哌啶子基)-2-
硫代
吡喃,8a-c(8d-f),并且观察到一种新型的重排。2-
硫吡喃9是由1b和3-
丙炔酸乙酯形成的,阐明了机理。讨论了6和7的1 H和13 C NMR数据。