<i>N</i>-Difluoromethylthiophthalimide: A Shelf-Stable, Electrophilic Reagent for Difluoromethylthiolation
作者:Dianhu Zhu、Yang Gu、Long Lu、Qilong Shen
DOI:10.1021/jacs.5b03170
日期:2015.8.26
A new, electrophilic difluoromethylthiolating reagent N-difluoromethylthiophthalimide 3 was developed. Reagent 3 can be readily synthesized in four steps from easily available starting materials phthalimide and TMSCF2H. N-difluoromethylthiophthalimide 3 is a powerful electrophilic difluoromethylthiolating reagent that allows the difluoromethylthiolation of a wide range of nucleophiles including aryl/vinyl
Directed Markovnikov hydroarylation and hydroalkenylation of alkenes under nickel catalysis
作者:Zi-Qi Li、Omar Apolinar、Ruohan Deng、Keary M. Engle
DOI:10.1039/d1sc03121j
日期:——
Native Lewis basic functional groups enable the nickel-catalyzed Markovnikov-selective hydroarylation and hydroalkenylation of unactivated alkenes with organoboron reagents.
Synthetic and Mechanistic Studies of a Versatile Heteroaryl Thioether Directing Group for Pd(II) Catalysis
作者:Andrew M. Romine、Kin S. Yang、Malkanthi K. Karunananda、Jason S. Chen、Keary M. Engle
DOI:10.1021/acscatal.9b01471
日期:2019.9.6
an arene C–H olefination method was also successfully developed. Reaction progress kinetic analysis provides insights into the role of the directing group in each reaction, which is supplemented with computational data for the oxidative Heck reaction. Furthermore, this (BT)S directing group can be transformed into a number of synthetically useful functional groups, including a sulfone for Julia olefination
Generation of an Aromatic Amide-Derived Phosphane (Aphos) Library by Self-Assisted Molecular Editing and Applications of Aphos in Room-Temperature Suzuki–Miyaura Reactions
reference Suzuki-Miyaura coupling reaction. The structures of all Aphos ligands were characterized by 31P NMR spectroscopy and their catalytic profiles in the reference reaction were evaluated by HPLC analysis. These data allowed the identification of an efficient Aphos ligand, capable of promoting room-temperature Suzuki-Miyaura coupling of unactivated and sterically hindered arylchlorides with arylboronic
Thermal and photochemical annulation of vinyl azides to 2-aminoimidazoles
作者:Lucas Man、Royston C. B. Copley、Anthony L. Handlon
DOI:10.1039/c9ob01100e
日期:——
tandem addition cyclization reaction of vinyl azides and cyanamide has been investigated. These reactions proceeded through either thermal or photochemical activation of vinyl azides and demonstrated wide substrate scope. In the photochemicalreaction, blue light (456 nm) alone triggered photolysis of the azide without the addition of a photocatalyst. Possible reactionmechanisms in the context of substrate