Tin-free, photoinduced electron transfer promoted reductive radicalcyclization reactions of allyl 2-bromoaryl ethers in the presence of NaOH in 2-PrOH were found to take place efficiently to give 3-methyl-2,3-dihydrobenzofurans. In contrast to conventional radicalcyclization reactions that employ AIBN/Bu3SnH in benzene, the new method utilizes NaOH and 2-PrOH that are both readily available and benign
发现在2-PrOH中的NaOH存在下,无锡,光诱导的电子转移促进的烯丙基2-溴芳基醚的还原自由基环化反应有效地产生了3-甲基-2,3-二氢苯并呋喃。与在苯中使用AIBN / Bu 3 SnH的常规自由基环化反应相反,该新方法利用了既容易获得又良性的NaOH和2-PrOH。因此,新开发的光化学方法是进行芳基自由基环化反应的一种通用且环保的方法。
NOVEL ORGANOLEPTIC COMPOUNDS
申请人:International Flavors & Fragrances Inc.
公开号:EP3124478A1
公开(公告)日:2017-02-01
The present invention relates to a novel compound and its use as a fragrance material.
本发明涉及一种新型化合物及其作为香料的用途。
US9816048B2
申请人:——
公开号:US9816048B2
公开(公告)日:2017-11-14
Cathodic Radical Cyclisation of Aryl Halides Using a Strongly‐Reducing Catalytic Mediator in Flow
作者:Ana A. Folgueiras‐Amador、Alexander E. Teuten、Mateo Salam‐Perez、James E. Pearce、Guy Denuault、Derek Pletcher、Philip J. Parsons、David C. Harrowven、Richard C. D. Brown
DOI:10.1002/anie.202203694
日期:2022.8.26
Cathodic radicalcyclisations of aryl halides have been achieved in an undivided flow electrolysis cell, using phenanthrene as mediator in loadings down to 0.05 equiv, and without the requirement for a sacrificial anode. It is proposed that mediated homogeneous electron transfer proceeds in a reaction layer detached from the cathode, accounting for the observed selectivity.