Zur Kenntnis der Acetylencarbonsäuren Mitteilung: Lactonbildung aus Dipropargylmalonsäure
作者:K. E. Schulte、G. Nimke
DOI:10.1002/ardp.19572901205
日期:——
Bismuth-catalyzed Intramolecular Hydro-oxycarbonylation of Alkynes
作者:Kimihiro Komeyama、Keita Takahashi、Ken Takaki
DOI:10.1246/cl.2008.602
日期:2008.6.5
Bi(OTf)3 was found to be a good catalyst for intramolecular addition of carboxylic acids to alkynes (hydro-oxycarbonylation), which afforded the corresponding 5- and 6-membered lactones in moderate...