Intermolecular [3+2] Cycloaddition of Cyclopropylamines with Olefins by Visible‐Light Photocatalysis

摘要: Solar energy is clean, abundant, and more importantly, renewable. As such, any reaction that efficiently harvests converts solar into chemical important than ever as the world turns to its scientists meet challenge of environmental sustainability. Visible light (390–750 nm) accounts for 43% overall spectrum. However, many organic molecules are unable absorb visible efficiently, thereby limiting use in synthesis. A possible solution this problem involves visible-light photoredox catalysts such ruthenium[1] or iridium[2] polypyridyl complexes channel from molecules. The groups MacMillan,[3] Yoon,[4] Stephenson,[5] Akita,[6] others[7] have recently published seminal works on visible-light-promoted C–C bond-formation reactions catalyzed by these complexes. Amines often used a sacrificial electron donor reduce photoexcited RuII IrIII RuI IrII complexes.[8] Recently, amines been also explored substrate processes.[9] We were intrigued potential using both substrate, thus making process atom economical.