A polyamine dendritic polymer–copper complex: a reusable catalyst for the additive-free amination of aryl bromides, and iodides

2020 ◽  
Vol 44 (4) ◽  
pp. 1477-1484 ◽  
Author(s):  
Avudaiappan G. ◽  
Palmurukan M. R. ◽  
Unnikrishnan V. ◽  
Sreekumar K.

Additive-free synthesis of aryl amines from aryl halides using a reusable water-soluble porphyrin-cored amine-functionalized dendritic polymer copper complex (PPECH–Amine–Cu) catalyst in aqueous media.

1993 ◽  
Vol 99 (5) ◽  
pp. 4128-4139 ◽  
Author(s):  
Osamu Ohno ◽  
Youkoh Kaizu ◽  
Hiroshi Kobayashi

2019 ◽  
Vol 4 (19) ◽  
pp. 5897-5902 ◽  
Author(s):  
G. Avudaiappan ◽  
V. Unnikrishnan ◽  
Jisha J. Pillai ◽  
K. Sreekumar

2021 ◽  
Author(s):  
Aranee Pleng Teepakakorn ◽  
Makoto Ogawa

Water-induced self-healing materials were prepared by the hybridization of a water-soluble polymer, poly(vinyl alcohol), with a smectite clay by mixing in an aqueous media and subsequent casting. Without using chemical...


2013 ◽  
Vol 17 (06n07) ◽  
pp. 447-453 ◽  
Author(s):  
Hiroaki Isago ◽  
Harumi Fujita

Dissociation of imino proton(s) in the cavity of the macrocycle of a highly water-soluble, metal-free phthalocyanine ( H 2( H 4 tsppc ); where H 4 tsppc denotes tetrakis{(2′,6′-dimethyl-4′-sulfonic acid)phenoxy}phthalocyaninate) in ethanolic and aqueous solutions has spectrophotometrically been investigated. The spectral changes associated with reaction with NaOH have been found to involve one-proton transfer process in aqueous media while two-protons process in ethanolic media. The acid-dissociation constant of the first imino proton in water (in the presence of Triton X-100) has been determined to be 12.5 ± 0.2 (as pKa) at 25 °C. The doubly deprotonated species in EtOH has been easily converted to its corresponding cobalt(II) derivative by thermal reaction with anhydrous CoCl 2.


2014 ◽  
Vol 30 (3) ◽  
pp. 379-382 ◽  
Author(s):  
Qiang Fei ◽  
Chunyu Wang ◽  
Baojun Wang ◽  
Hui Xu ◽  
Guanghua Li ◽  
...  

1986 ◽  
Vol 130 (6) ◽  
pp. 555-559 ◽  
Author(s):  
U. Hofstra ◽  
R.B.M. Koehorst ◽  
T.J. Schaafsma

Sign in / Sign up

Export Citation Format

Share Document