Carbene Transfer - A New Pathway for Propargylic Esters in Gold Catalysis
作者:Tobias Lauterbach、Sabrina Gatzweiler、Pascal Nösel、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/adsc.201300572
日期:2013.9.16
Gold carbenes generated via 1,2‐migration of a propargylic ester group can be transferred over a tethered alkyne. The use of aromatic backbones leads after a 1,7‐carbene transfer to a benzyl‐stabilized carbene as intermediate. A 1,2‐shift of a methyl group delivers vinyl‐substituted β‐naphthol derivatives as the final products.
On the synthesis of isoannulated pyrroles and δ-pyridones
作者:Wolfgang Eberbach、Norbert Laber
DOI:10.1016/s0040-4039(00)77673-8
日期:1992.1
The synthesis of furo- and thieno[2,3-c]pyridones 13a,b as well as the corresponding pyrroles 14a,b by using the 1,7-dipolar cyclization route of conjugated nitrones 9a,b is reported. In the presence of O2 and light the pyridones are converted into the pyridinediones 17a,b.