e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
… Preparation of 2-Indolyl-1-nitroalkane Derivatives Employing Nitroalkenes as Versatile Michael Acceptors: New Practical Linear Approach to Alkyl 9 H-β-Carboline-4- …
... Volume: Page: Digital Object Identifier (DOI). ... The use of CeCl 3 ·7H 2 O−SiO 2 as “friendly” Lewis acid promoter 9 in Michael reactions with poorly reactive indoles has not been reported previously. ... 13 figure Scheme 1. ...