Ring expansion of bicyclo[1.1.0]butyl ketones to bicyclo[2.1.1]hexenes using ketone as both activating and reacting groups

J Junjie Ge (State Key Laboratory of Precision and Intelligent, Chemistry and School of Chemistry and Materials Science) L Lihang Cao K Kun Lin (Institute of Solid State Chemistry) C Chenhao Ruan X Xinyi Ye (College of Pharmaceutical Science) X Xiaoze Bao Z Zhikun Yang H Hong Wang H Hua Chen (Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands)