Silylchromium-Catalyzed Selective Semihydrogenation of Undirected Allenes by Sila-Metalation and β-Silyl Elimination.

• Tác giả: Hui Chen, Linhong Long, Meiming Luo, Zheng Luo, Yong Peng, Xiaoming Zeng, Xiaoyu Zhang, Shuaiyong Zhao
• Ngôn ngữ: eng
• Ký hiệu phân loại: 553.4643 Metals and semimetals
• Thông tin xuất bản: Germany : Angewandte Chemie (International ed. in English) , 2025
• Bộ sưu tập: NCBI
• ID: 745371

Tóm tắt

The semihydrogenation of simple allenes remains an issue because of the difficulty in controlling of selectivity without coordination assistance from directing groups, wherein over-hydrogenated alkanes and E/Z-mixed stereo- and regio-isomers can be potentially formed. We report here an electron-rich cyclic (alkyl)(amino)carbene (CAAC)-phosphine-ligated chromium(III) complex serving as precatalyst in promoting the selective semihydrogenation of undirected allenes by forming active silylchromium species. The semihydrogenation allows the selective addition of H