BPO等)以及传统的氢自由基转移试剂(如硫醇),而是直接利用NHC-BH3自身的氧化还原电势,通过光催化剂直接氧化B-H键断裂产生高活性的硼自由基中间体,并利用此中间体进行了一系列有机硼化合物的合成,简化了操作步骤,降低了合成难度。
NHC‐boranes (NHCBH3) react slowly under thermal conditions with dibenzoyl peroxide to make mixtures of NHC‐boryl monoand dibenzoates [NHCBH2OBz and NHCBH(OBz)2]. Reactions are much faster under radical conditions with AIBN of TBHN as initiators. The TBHN method is especially good to ...
In this Communication, we report an unprecedented β-regioselective radical inverse hydroboration (compared with ionic hydroboration) of α,β-unsaturated amides with NHC-BH3enabled by photoredox catalysis. Density functional theory (DFT) calculations show that the unique photoredox cycle is a key ...
A visible-light-induced C-5 selective C—H borylation of imidazo[1,2-a]pyridines with NHC-BH3via Minisci-type radical borylation reaction has been developed for the first time. The present sustainable protocol provides a new family of regioselectively C5-borylated imidazopyridines that would ...
Comprehensive Summary: A visible‐light‐induced C‐5 selective C—H borylation of imidazo[1,2‐a]pyridines with NHC‐BH3via Minisci‐type radical borylation reaction has been developed for the first time. The present sustainable protocol provides a new family of regioselective...
This is especially dominant for electron-deficient alkyl halides, where the formed electrophilic radical reacts rapidly with NHC boranes. Herein, by employing a sterically hindered NHC borane as the boryl radical precursor (IPr·BH3), we were able to use the electrophilic-deficient alkyl halide (...
By this measure, it is the first electrophilic ligated boryl radical. Both NHC-BH3 and NHC-BF2H serve as co-initiators in bulk photopolymerizations, converting both electron-poor and electron-rich monomers at roughly similar rates. However, the difluorinated coinitiator provides polymers with ...
By this measure, it is the first electrophilic ligated boryl radical ever prepared. Both NHC-BH3 and NHC-BF2H serve as co-initiators in bulk photopolymerizations, converting both electron poor and an electron rich monomers at roughly similar rates. However, the difluorinated coinitiator provides...