under mild conditions. Our best catalyst is active in a significantly wider range of solvents than our previous systems. In the presence of a suitable base, the Ir(III) species is also able to hydrogenate the C═O bonds of aldehydes. When quinolines and aldehydes are present together, the Ir(III) complex catalyzes a tandem reaction in which the quinoline is first hydrogenated to a tetrahydroquinoline that
Ir(III)的一系列环
金属化苯并
喹啉络合物在温和条件下催化
喹啉杂环的氢化。与我们以前的系统相比,我们最好的催化剂在更大范围的溶剂中具有活性。在合适的碱存在下,Ir(III)物种也能够氢化醛的C = O键。当
喹啉和醛一起存在时,Ir(III)络合物催化串联反应,在该反应中,
喹啉首先被氢化为
四氢喹啉,随后被醛还原烷基化。还原性烷基化与醛加氢成醇竞争,因此烷基化的
四氢喹啉的高收率需要存在过量的醛。