Photoinduced Ligand-to-Metal Charge Transfer (LMCT) of Fe Alkoxide Enabled C–C Bond Cleavage and Amination of Unstrained Cyclic Alcohols
作者:Ting Xue、Zongnan Zhang、Rong Zeng
DOI:10.1021/acs.orglett.1c04365
日期:2022.1.28
an alkoxy radical process for the C–C bond cleavage and functionalization of unstrained tertiary and secondary cyclic alcohols. In the absence of a chlorine atom, the readily available iron catalysts [Fe(OBu-t)3 or Fe(acac)3/t-BuONa] facilitate alkoxy radical formation via the direct ligand-to-metal charge transfer of Fe alkoxide and further enable the ring opening and amination of cyclic alcohols.
我们报告了一种用于 C-C 键断裂和无应变叔和仲环醇官能化的烷氧基自由基过程。在没有氯原子的情况下,容易获得的铁催化剂 [Fe(OBu- t ) 3或 Fe(acac) 3 / t -BuONa] 通过烷氧基铁的直接配体到金属的电荷转移促进烷氧基自由基的形成,进一步使环状醇的开环和胺化成为可能。在温和的氧化还原中性体系下,可以以高产率获得范围广泛的远程氨基羰基化合物。光驱动的电子转移、烷氧基自由基的形成以及随后通过 β 断裂的 C-C 键断裂是转化的关键。
Visible light-promoted ring-opening functionalization of unstrained cycloalkanols<i>via</i>inert C–C bond scission
作者:Dongping Wang、Jincheng Mao、Chen Zhu
DOI:10.1039/c8sc01763h
日期:——
light-promoted ring-opening functionalization of unstrained cycloalkanols. Upon scission of an inert cyclic C–C σ-bond, a set of medium- and large-sizedrings are readily brominated under mild reaction conditions to afford the corresponding distal bromo-substituted alkyl ketones that are hard to synthesize otherwise. The products are versatile building blocks, which are easily converted to other valuable