Mild and Low-Pressure<i>fac</i>-Ir(ppy)<sub>3</sub>-Mediated Radical Aminocarbonylation of Unactivated Alkyl Iodides through Visible-Light Photoredox Catalysis
作者:Shiao Y. Chow、Marc Y. Stevens、Linda Åkerbladh、Sara Bergman、Luke R. Odell
DOI:10.1002/chem.201601694
日期:2016.6.27
unactivated alkyl iodides employing a fac‐Ir(ppy)3‐catalyzed radical aminocarbonylation protocol has been developed. Using a two‐chambered system, alkyl iodides, fac‐Ir(ppy)3, amines, reductants, and CO gas (released ex situ from Mo(CO)6), were combined and subjected to an initial radical reductive dehalogenation generating alkyl radicals, and a subsequent aminocarbonylation with amines affording a
DIGLYCOLAMIDE DERIVATIVES FOR SEPARATION AND RECOVERY OF RARE EARTH ELEMENTS FROM AQUEOUS SOLUTIONS
申请人:UT-Battelle, LLC
公开号:US20220002229A1
公开(公告)日:2022-01-06
Rare earth extractant compounds having the following structure:
wherein R
1
, R
2
, R
3
, and R
4
are independently selected from alkyl groups containing 1-30 carbon atoms and optionally containing an ether or thioether linkage connecting between carbon atoms, provided that the total carbon atoms in R
1
, R
2
, R
3
, and R
4
is at least 12; R
5
and R
6
are independently selected from hydrogen atom and alkyl groups containing 1-3 carbon atoms; and provided that at least one of the conditions (i)-(iv) apply as follows: presence of a distal branched group in at least one of R
1
-R
4
(condition i), asymmetry in R
1
-R
4
(condition ii), presence of amine-containing ring (condition iii), or presence of lactam ring (condition iv). Also described are hydrophobic water-insoluble solutions containing at least one extractant compound of Formula (1), as well as method for extracting rare earth elements from aqueous solution by contacting the aqueous solution with the water-insoluble solution.
[EN] SWITCHABLE HYDROPHILICITY SOLVENTS AND METHODS OF USE THEREOF<br/>[FR] SOLVANTS COMMUTABLES ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV KINGSTON
公开号:WO2011050469A1
公开(公告)日:2011-05-05
A solvent that reversibly converts from a hydrophobic liquid form to hydrophilic liquid form upon contact with water and a selected trigger, e.g., contact with CO2, is described. The hydrophilic liquid form is readily converted back to the hydrophobic liquid form and water. The hydrophobic liquid is an amidine or amine. The hydrophilic liquid form comprises an amidinium salt or an ammonium salt.
An amidine containing at least one structural unit of the formula (I) and the use thereof as catalyst for the crosslinking of a functional compound, especially of a polymer having silane groups. The amidine is preparable in a simple process from readily available starting materials, is largely odorless at room temperature and is of low toxicity. It accelerates the crosslinking of functional compounds surprisingly efficiently and can be adjusted for optimal compatibility with different compositions via the radical to which the structural units of the formula (I) is bonded, which means that such compositions do not have a tendency to migration-related defects such as separation, exudation or substrate soiling.
Switchable Hydrophilicity Solvents and Methods of Use Thereof
申请人:Jessop Philip G.
公开号:US20110257334A1
公开(公告)日:2011-10-20
A solvent that reversibly converts from a hydrophobic liquid form to hydrophilic liquid form upon contact with water and a selected trigger, e.g., contact with CO
2
, is described. The hydrophilic liquid form is readily converted back to the hydrophobic liquid form and water. The hydrophobic liquid is an amidine or amine. The hydrophilic liquid form comprises an amidinium salt or an ammonium salt.