C-H activation/metalation approaches for the synthesis of indolizine derivatives - Bertallo, Camila Rodrigues de Souza; Arroio, Thais Rodrigues; Toledo, Mônica Franco Zannini Junqueira; Sadler, Scott A.; Vessecchi, Ricardo; Steel, Patrick G.; Clososki, Giuliano Cesar (European Journal of Organic Chemistry, 2019)