Regioselective synthesis of polysubstituted pyridines via hetero-Diels–Alder reaction of isotellurazoles with acetylenic dienophiles
作者:Kazuaki Shimada、Yukichi Takata、Yu Osaki、Akiko Moro-oka、Hisashi Kogawa、Maiko Sakuraba、Shigenobu Aoyagi、Yuji Takikawa、Satoshi Ogawa
DOI:10.1016/j.tetlet.2009.09.060
日期:2009.12
Treatment of substituted isotellurazoles or their Te-oxides with acetylenic dienophiles efficiently afforded polysubstituted pyridine derivatives through a pathway involving hetero-Diels–Alder reaction of isotellurazoles and the subsequent tellurium extrusion from the intermediary cycloadducts.
取代isotellurazoles的治疗或它们的特-oxides与高效地得到通过的通路涉及isotellurazoles的杂Diels-Alder反应和从中间cycloadducts后续碲挤出多取代的吡啶衍生物的炔属亲二烯体。