Copper-catalyzed benzylic C(sp<sup>3</sup>)–H alkoxylation of heterocyclic compounds
作者:Noriaki Takemura、Yoichiro Kuninobu、Motomu Kanai
DOI:10.1039/c4ob00215f
日期:——
We achieved intra- and intermolecular C(sp3)–H alkoxylation of benzylic positions of heteroaromatic compounds using CuBrn (n = 1, 2)/5,6-dimethylphenanthroline (or 4,7-dimethoxyphenanthroline) and (tBuO)2 as a catalyst and an oxidant, respectively. The reaction proceeded at both terminal and internal benzylic positions of the alkyl groups. The intramolecular alkoxylation was performed on a gram scale
我们使用CuBr n(n = 1,2)/ 5,6-二甲基菲咯啉(或4,7-二甲氧基菲咯啉)和(t BuO)2实现了杂芳族化合物苄基位置的分子内和分子间C(sp 3)-H烷氧基化分别作为催化剂和氧化剂。反应在烷基的末端和内部苄基位置上进行。分子内烷氧基化以克为单位进行。