Nickel-Catalyzed Deoxycyanation of Activated Phenols via Cyanurate Intermediates with Zn(CN)<sub>2</sub>: A Route to Aryl Nitriles
作者:Majid M. Heravi、Farhad Panahi、Nasser Iranpoor
DOI:10.1021/acs.orglett.8b00974
日期:2018.5.4
A novel, and efficient nickel-catalyzed deoxycyanation of phenolic compounds using relatively nontoxic Zn(CN)2 as the cyanide source was developed. The reaction of C–O bond activated phenolic compounds by 2,4,6-trichloro-1,3,5-triazine with Zn(CN)2 in the presence of a nickel precatalyst afforded the aromaticnitriles in good to excellent yields.
Derivatives of purine, their preparation process and pharmaceutical compositions containing them
申请人:Haesslein Jean-Luc
公开号:US20050187228A1
公开(公告)日:2005-08-25
A compound of the formula
wherein R is defined as in the specification, which compounds have an inhibitory effect vis-à-vis cycline-dependent kinase proteins (cdk) and are endowed with antimitotic properties.
one‐pot synthesis of N‐(hetero)aryl carbamates through the reaction between alcohols and in‐situ produced (hetero)aryl isocyanates in the presence of a nickel catalyst. The phenolic C−O bond was activated via the reaction of phenol with cyanuric chloride (2,4,6‐trichloro‐1,3,5‐triazine (TCT)) as an inexpensive and readily available reagent. This strategy provides practical access to N‐(hetero)aryl carbamates
A Soluble Polymer-Supported Triflating Reagent: A High-Throughput Synthetic Approach to Aryl and Enol Triflates
作者:Anita D. Wentworth、Paul Wentworth,、U. Faruk Mansoor、Kim D. Janda
DOI:10.1021/ol9913237
日期:2000.2.1
[reaction: see text] The high-yielding synthesis and application of the first example of a polymer-supported reagent for the preparation of trifluoromethanesulfonates (triflates) is described. This new reagentefficiently triflates aryl alcohols and lithium enolates in high yield (>90%). A simple precipitation and filtration to remove the excess reagent and byproduct facilitate purification of the
An efficient base and H<sub>2</sub>O<sub>2</sub> free protocol for the synthesis of phenols in water and oxygen using spinel CuFe<sub>2</sub>O<sub>4</sub> magnetic nanoparticles
作者:Rituparna Chutia、Bolin Chetia
DOI:10.1080/00958972.2020.1802437
日期:2020.7.2
Abstract An efficient base and H2O2 free protocol was used for the synthesis of phenols from boronic acids using biogenic CuFe2O4 magnetic nanoparticles as catalyst at roomtemperature in water and oxygen. The catalyst was prepared using the flowers of Lantana camara. The size of the nanoparticles was 4.27 nm. Base free and ligand free protocol, less time, excellent yields, roomtemperature, biogenic