Photoredox chemistry in the synthesis of 2-aminoazoles implicated in prebiotic nucleic acid synthesis
作者:Ziwei Liu、Long-Fei Wu、Andrew D. Bond、John D. Sutherland
DOI:10.1039/d0cc05752e
日期:——
Prebiotically plausible ferrocyanide–ferricyanide photoredox cycling oxidatively converts thiourea to cyanamide, whilst HCN is reductively homologated to intermediates which either react directly with the cyanamide giving 2-aminoazoles, or have the potential to do so upon loss of HCN from the system. Thiourea itself is produced by heating ammonium thiocyanate, a product of the reaction of HCN and hydrogen
cis-Dihydroxylation of electron deficient olefins catalysed by an oxo-bridged diiron(III) complex with H2O2
作者:Ambica Kejriwal、Sachidulal Biswas、Achintesh N. Biswas、Pinaki Bandyopadhyay
DOI:10.1016/j.molcata.2015.11.023
日期:2016.3
acetic acid. The catalytic system has been shown to oxidise electron-deficient olefins to the corresponding cis-diols, while epoxidation is favoured in case of electron-rich olefins. The μ-oxo diiron(III) core of the catalyst 1 has been found be regenerated after the catalytic turnovers. Addition of a second batch of substrate and oxidant at the end of the olefin oxidation results in the formation of
室由一个对称的(μ-氧代)(μ-羟基)二铁催化的烯烃的温度氧化(III)配合物(1)的基础上氨基吡啶基配体bpmen(bpmen = Ñ,Ñ '二甲基Ñ,Ñ N'-双描述了在限制底物的条件下用过氧化氢的(2-吡啶基甲基)乙烷-1,2-二胺。在环境反应条件下,已实现了出色的底物转化率。已经发现1 / H 2 O 2体系的烯烃氧化效力在乙酸的存在下得到改善。已表明催化体系可将缺电子的烯烃氧化为相应的顺式-二醇,而在富含电子的烯烃的情况下,环氧化是有利的。已经发现催化剂1的μ-氧代二铁(III)核在催化周转之后被再生。在烯烃氧化结束时添加第二批底物和氧化剂导致形成几乎相同量的环氧化物/二醇。此外,再生的催化剂对缺电子烯烃的氧化表现出明显更高的优先性。
Synthesis of Aldehydic Ribonucleotide and Amino Acid Precursors by Photoredox Chemistry
作者:Dougal J. Ritson、John D. Sutherland
DOI:10.1002/anie.201300321
日期:2013.5.27
Light work: UV irradiation of a system formed by adding copper(I) cyanide to an aqueous solution of glycolonitrile, sodium phosphate, and hydrogen sulfide efficiently generates aldehyde precursors to the building blocks of RNA and proteins.
Photochemical reductive homologation of hydrogen cyanide using sulfite and ferrocyanide
作者:Jianfeng Xu、Dougal J. Ritson、Sukrit Ranjan、Zoe R. Todd、Dimitar D. Sasselov、John D. Sutherland
DOI:10.1039/c8cc01499j
日期:——
Photoredox cycling during UV irradiation of ferrocyanide ([FeII(CN)6]4−) in the presence of stoichiometric sulfite (SO32−) is shown to be an extremely effective way to drive the reductive homologation of hydrogen cyanide (HCN) to simple sugars and precursors of hydroxy acids and amino acids.
The present invention provides a method for producing a diol having a specific structure in high yields while keeping high selectivity. Provided is a method for producing a diol having a specific structure by oxidizing an olefin having a specific structure in the presence of a ruthenium compound.