Photocatalytic Synthesis of γ-Lactones from Alkenes: High-Resolution Mass Spectrometry as a Tool To Study Photoredox Reactions
作者:Ierasia Triandafillidi、Maroula G. Kokotou、Christoforos G. Kokotos
DOI:10.1021/acs.orglett.7b03256
日期:2018.1.5
A mild photocatalytic manifold for the synthesis of γ-lactones has been developed. Utilizing Ru(bpy)3Cl2 as the photocatalyst, a cheap and reproducible synthetic protocol for γ-lactones has been introduced. Mechanistic studies revealed the successful monitoring of photocatalyticreactions and radical intermediates via high-resolution mass spectrometry.
Photochemical Synthesis of Lactones, Cyclopropanes and ATRA Products: Revealing the Role of Sodium Ascorbate**
作者:Marie Rrapi、Charikleia S. Batsika、Nikolaos F. Nikitas、Nicholas D. C. Tappin、Ierasia Triandafillidi、Philippe Renaud、Christoforos G. Kokotos
DOI:10.1002/chem.202400253
日期:——
Photochemistry: A direct and mild photochemical synthesis of lactones, cyclopropanes and ATRA products, utilizing sodium ascorbate or ascorbic acid as the halogen/hydrogen bonding mediator and irradiation at 370 nm, 390 nm or 427 nm LED as the irradiation source. A variety of iodo-reagents were activated via halogen or hydrogen bonding and reacted successfully with a number of alkenes without the use