Magnetic nanoparticle-supported Hoveyda-Grubbs catalysts for ring-closing metathesis reactions - Chao Che; Wenzhao Li; Shengyue Lin; Jiwei Chen; Jie Zheng; Jiun-Chen Wu; Qunxiong Zheng; Guoqing Zhang; Zhen Yang; Biwang Jiang (Chemical Communications, 2009)