作者:Benjaminâ W. Gung、Derekâ T. Craft、Laurenâ N. Bailey、Kristin Kirschbaum
DOI:10.1002/chem.200902185
日期:2010.1.11
using a CrCl2‐promoted reaction. In the presence of either a AuI or AuIII catalyst, a tandem 3,3‐rearrangement/transannular [4+3] cycloaddition reaction occurred to give propargyl acetates that are regio‐ and diastereospecific. The regiochemistry of the product is controlled by the position of the acetoxy group in the starting material and the stereochemistry of the reaction depends on the ring size
通过使用 CrCl 2促进的反应制备了含有呋喃环的大环乙酸炔丙酯。在 Au I或 Au III催化剂存在下,发生串联的 3,3-重排/跨环 [4+3] 环加成反应,得到具有区域和非对映特异性的乙酸炔丙酯。产物的区域化学受起始材料中乙酰氧基的位置控制,反应的立体化学取决于环的大小。