. Author manuscript; available in PMC: 2014 Nov 20.
Published in final edited form as: Chemistry. 2014 Mar 3;20(14):3917–3921. doi: 10.1002/chem.201400407
© 2014 The Authors.
This is an open access article under the terms of the Creative Commons Attribution Non-Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Scheme 2.
Catalyst screening for the Friedel–Crafts Michael-type reaction.