Herein, by dual C–O bond cleavage of cyclic ethers with Cu catalysis, we eventually led to the development of a selective three-component coupling of commercially available chemicals, carboxylic acids, ethers, and halogens to synthesize more than 70 iodoalkyl esters in the presence of TMSCF3. This allows for the concise synthesis of highly functionalized iodoalkyl esters directly. And the synthetic
在此,通过在 Cu 催化下环状醚的双 C-O 键断裂,我们最终开发了市售化学品、羧酸、醚和卤素的选择性三组分偶联,以合成超过 70 种碘代烷基酯。 TMSCF 3的存在。这允许直接简明合成高度官能化的碘代烷基酯。并且还公开了合成昆虫信息素。
Visible Light-Assisted Ring-Opening of Cyclic Ethers with Carboxylic Acids Mediated by Triphenylphosphine and <i>N</i>-Halosuccinimides
作者:Dhiraj K. Jha、Sandhya Acharya、Nagaraju Sakkani、Samantha Chapa、Andrew Guerra、John C.-G. Zhao
DOI:10.1021/acs.orglett.3c03805
日期:2024.1.12
(epoxide, oxetane, THF, and THP) by carboxylicacids was achieved by using N-iodosuccinimide (NIS) or N-bromosuccinimide (NBS) and triphenylphosphine under blue light. The corresponding ω-haloalkyl carboxylates were obtained under mild reaction conditions. The reaction is believed to work through a halogen bond complex between NIS (or NBS) and triphenylphosphine, which, upon irradiation with blue light