PNCNP Pincer Platinum Chloride Complex as a Catalyst for the Hydrosilylation of Unsaturated Carbon-Heteroatom Bonds
作者:Man Ding、Jiarui Chang、Jia-Xue Mao、Jie Zhang、Xuenian Chen
DOI:10.1021/acs.organomet.2c00445
日期:2022.12.12
A PNCNP pincer-ligated platinum(II) chloride complex [2,6-(tBu2PNH)2C6H3]PtCl (1a) was synthesized and fully characterized. Complex 1a was applied to the catalytic hydrosilylation of unsaturated carbon-heteroatom bonds. For comparison, the corresponding hydride complex [2,6-(tBu2PNH)2C6H3]PtH (1b) and the related POCOP pincer chloride complex [2,6-(tBu2PO)2C6H3]PtCl (1c) were also used to catalyze
合成并充分表征了 PNCNP 钳连接的氯化铂 (II) 络合物 [2,6-( t Bu 2 PNH) 2 C 6 H 3 ]PtCl ( 1a )。络合物1a应用于不饱和碳-杂原子键的催化氢化硅烷化。为了比较,相应的氢化物络合物 [2,6-( t Bu 2 PNH) 2 C 6 H 3 ]PtH ( 1b ) 和相关的 POCOP 钳形氯络合物 [2,6-( t Bu 2 PO) 2 C 6 H 3 ]氯化铂(1c ) 也用于催化反应。发现1a是 C=O 和 C=N 键氢化硅烷化的良好催化剂。范围广泛的醛亚胺、酮亚胺、醛和酮被氢化硅烷化,并以良好至优异的收率获得预期的胺或醇产物。该反应还具有良好的官能团相容性。络合物1a代表了最有效的 C=N 键氢化硅烷化过渡金属催化剂,并且是 C=O 键氢化硅烷化的最佳过渡金属催化剂之一。这些反应可能由反应过程中由络合物1a生成的阳离子铂 (II) 物种催化。