Visible Light Driven and Copper-Catalyzed C(sp<sup>3</sup>)–H Functionalization of <i>O</i>-Pentafluorobenzoyl Ketone Oximes
作者:Danhua Wu、Shuang-Shuang Cui、Fengling Bian、Wei Yu
DOI:10.1021/acs.orglett.1c02133
日期:2021.8.6
with copper complexes as catalysts. The reactions involve iminyl-radical-mediated intramolecular hydrogen atom transfer as the key step, with the iminyl radicals being generated via copper-effected N–O cleavage. The reaction afforded 3,4-dihydro-2H-pyrroles under the conditions of [Cu(DPEphos)(bcp)]PF6 and DABCO, while γ-pentafluorobenzoyloxy ketones were produced predominantly when [Cu(dpp)2]PF6 and
O-五氟苯甲酰基酮肟的C(sp 3 )-H官能化是在可见光照射下以铜配合物为催化剂实现的。该反应涉及亚胺基介导的分子内氢原子转移作为关键步骤,亚胺基自由基是通过铜作用的 N-O 裂解产生的。该反应在[Cu(DPEphos)(bcp)]PF 6和DABCO条件下生成3,4-二氢-2 H-吡咯,而在[Cu(dpp) 2 ]PF 6和DABCO条件下主要生成γ-五氟苯甲酰氧基酮。InCl 3 ·4H 2 O用作催化剂。