The Properties of Electrolytes in Mixtures of Water and Organic Solvents. III. Ionization Constant of Acetic Acid in an 82% Dioxane-Water Mixture

1939 ◽  
Vol 61 (9) ◽  
pp. 2377-2379 ◽  
Author(s):  
Herbert S. Harned ◽  
Leslie D. Fallon
2016 ◽  
Vol 12 ◽  
pp. 1566-1572 ◽  
Author(s):  
Anne L Schöffler ◽  
Ata Makarem ◽  
Frank Rominger ◽  
Bernd F Straub

A dinuclear N-heterocyclic carbene (NHC) copper complex efficiently catalyzes azide–alkyne cycloaddition (CuAAC) “click” reactions. The ancillary ligand comprises two 4,5-dimethyl-1,3-thiazol-2-ylidene units and an ethylene linker. The three-step preparation of the complex from commercially available starting compounds is more straightforward and cost-efficient than that of the previously described 1,2,4-triazol-5-ylidene derivatives. Kinetic experiments revealed its high catalytic CuAAC activity in organic solvents at room temperature. The activity increases upon addition of acetic acid, particularly for more acidic alkyne substrates. The modular catalyst design renders possible the exchange of N-heterocyclic carbene, linker, sacrificial ligand, and counter ion.


2006 ◽  
Vol 22 (07) ◽  
pp. 868-872
Author(s):  
LIU Hui-Hong ◽  
◽  
◽  
WAN Yong-Qing ◽  
CHEN Xian-Tang ◽  
...  

2020 ◽  
Vol 235 ◽  
pp. 116102 ◽  
Author(s):  
Waseem Raza ◽  
Jianhua Yang ◽  
Jiaxuan Wang ◽  
Hammad Saulat ◽  
Gaohong He ◽  
...  

1983 ◽  
Vol 28 (3) ◽  
pp. 328-330 ◽  
Author(s):  
Renzo Carta ◽  
Stella Dernini
Keyword(s):  

1931 ◽  
Vol 53 (6) ◽  
pp. 2419-2420 ◽  
Author(s):  
D. A. MacInnes ◽  
Theodore. Shedlovsky

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