products can be obtained in moderate to good yields, which offers practical access to five- and six-membered lactams. This protocol has predictable regio- and chemoselectivity, excellent functional group compatibility and ease of operation in air, representing a significant step-forward towards manganese-catalyzed C-C coupling.
The invention describes a process for stabilizing an organic material against oxidative, thermal or light-induced degradation, which comprises incorporating therein or applying thereto at least a compound of the formula (I) wherein the general symbols are as defined in claim
1
. The compounds of the formula I are especially useful as processing stabilizers for synthetic polymers.
Photoenzymatic Reductions Enabled by Direct Excitation of Flavin-Dependent “Ene”-Reductases
作者:Braddock A. Sandoval、Phillip D. Clayman、Daniel G. Oblinsky、Seokjoon Oh、Yuji Nakano、Matthew Bird、Gregory D. Scholes、Todd K. Hyster
DOI:10.1021/jacs.0c11494
日期:2021.2.3
Non-natural photoenzymatic reactions reported to date have depended on the excitation of electrondonor-acceptorcomplexes formed between substrates and cofactors within protein active sites to facilitate electron transfer. While this mechanism has unlocked new reactivity, it limits the types of substrates that can be involved in this area of catalysis. Here we demonstrate that direct excitation of
Correction to “Photoenzymatic Reductions Enabled by Direct Excitation of Flavin-Dependent ‘Ene’-Reductases”
作者:Braddock A. Sandoval、Phillip D. Clayman、Daniel G. Oblinsky、Seokjoon Oh、Yuji Nakano、Matthew Bird、Gregory D. Scholes、Todd K. Hyster
DOI:10.1021/jacs.1c01618
日期:2021.3.10
the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy (DOE) through grant DE-SC0019370. Use of the Laser Electron Accelerator Facility (LEAF) of the BNL Accelerator Center for Energy Research (ACER) was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences
Electrochemical Difluoromethylation of Electron‐Deficient Alkenes
作者:He‐Huan Xu、Jinshuai Song、Hai‐Chao Xu
DOI:10.1002/cssc.201803058
日期:2019.7.5
Electrochemical 1,2‐hydroxydifluoromethylation and C−H difluoromethylation of acrylamides were developed by using CF2HSO2NHNHBoc as the source of the CF2H group. These electricity‐powered oxidative alkene functionalization reactions do not need transition‐metal catalysts or chemical oxidants. The reaction outcome, 1,2‐difuntionalization or C−H functionalization, is determined by the substituents on