Visible
<scp>Light‐Promoted</scp>
Sulfoxonium Ylides Synthesis from Aryl Diazoacetates and Sulfoxides
作者:Juan Lu、Lei Li、Xiang‐Kui He、Guo‐Yong Xu、Jun Xuan
DOI:10.1002/cjoc.202100064
日期:2021.6
A visible light-promoted reaction of donor/acceptor diazoalkanes with sulfoxides towards the synthesis of synthetically useful sulfoxonium ylides was reported. The reaction occurred under sole visible light irradiation without the need of any transition-metals or additives, affording the corresponding sulfoxonium ylides in moderate to good yields. The success of late-stage modification of natural isolates
Diazo Activation with Diazonium Salts: Synthesis of Indazole and 1,2,4-Triazole
作者:Xuming Li、Xiaohan Ye、Chiyu Wei、Chuan Shan、Lukasz Wojtas、Qilin Wang、Xiaodong Shi
DOI:10.1021/acs.orglett.0c01232
日期:2020.6.5
reported. The diazenium intermediate was found to undergo cyclization to give indazoles in excellent yields. Alternatively, in the presence of nitriles, substituted 1,2,4-triazoles were obtained in good to excellent yields. This interesting diazenium route provides a new approach to achieve complex heterocycle synthesis under mild conditions.
作者:Cong Ye、Bao-Gui Cai、Juan Lu、Xiao Cheng、Lei Li、Zhong-Wen Pan、Jun Xuan
DOI:10.1021/acs.joc.0c02500
日期:2021.1.1
A blue-light-emitting diode (LED) promoted coupling of aryl diazoacetates with sulfurylides is described. This protocol features mild conditions, good functional group tolerance, and broad substrate scope for both aryl diazoacetates with sulfurylides. Under optimal reaction conditions, a wide range of trisubstituted olefins is obtained in moderate to good yield, which can be further transferred to
Catalyst-free, visible-light-promoted S–H insertion reaction between thiols and α-diazoesters
作者:Jingya Yang、Ganggang Wang、Shuwen Chen、Ben Ma、Hongyan Zhou、Menghui Song、Cai Liu、Congde Huo
DOI:10.1039/d0ob02006k
日期:——
A visible-light-promoted S–H insertion reaction betweenthiols and α-diazoesters was developed. The reaction proceeded smoothly at room temperature with a broad substrate scope, affording various thioethers in moderate to excellent yields. The catalyst- and additive-free nature, sustainable energy source and mild reaction conditions make this strategy more eco-friendly.
Visible-light-promoted selective <i>O</i>-alkylation of 2-pyridones with α-aryldiazoacetates
作者:Jingya Yang、Ganggang Wang、Hongyan Zhou、Zhifeng Li、Ben Ma、Menghui Song、Rongxia Sun、Congde Huo
DOI:10.1039/d0ob02350g
日期:——
A visible-light-promoted O–H insertion reaction between 2-pyridones and α-aryldiazoacetates has been developed. Upon visible light irradiation, the reaction proceeds smoothly under mild and catalyst-free conditions. A wide scope of 2-pyridones and α-aryldiazoacetates are well tolerated, and various O-alkylated 2-pyridones are obtained with perfect selectivity and good functional group tolerance. A