Heat capacities of activation for the neutral hydrolysis of two acyl-activated esters in water-rich 2-n-butoxyethanol-water mixtures. Analysis in terms of the pseudo-phase-separation model

1983 ◽  
Vol 48 (22) ◽  
pp. 4025-4030 ◽  
Author(s):  
Herman A. J. Holterman ◽  
Jan B. F. N. Engberts
Keyword(s):  
Phase Separation ◽  
Heat Capacities ◽  
Activated Esters ◽  
Hydrolysis Of ◽  
Separation Model

The Effect of Cetyltrimethylammonium Bromide on the 2-Iodosyl-5-octyloxy-benzoate-Catalyzed Hydrolysis of Active Esters and Related Compounds

1990 ◽  
Vol 43 (5) ◽  
pp. 937 ◽  
Author(s):  
DR Leslie ◽  
S Pantelidis
Keyword(s):  
Phase Separation ◽  
Cetyltrimethylammonium Bromide ◽  
Active Esters ◽  
Diphenyl Phosphate ◽  
Hydrolysis Of ◽  
Related Compounds ◽  
Separation Model

Enhancements provided by micellized cetyltrimethylammonium bromide ( ctab ), to the rates of reaction between 2-iodosyl-5-octyloxybenzoic acid and 4-nitrophenyl diphenyl phosphate (3), 4-nitrophenyl acetate (4), 1-methylethyl methylphosphonofluoridate (5), 1,2,2-trimethylpropyl methylphosphonofluoridate (6) and ethyl N,N- dimethylphosphoramidocyanidate (7) are determined over a range of ctab concentrations. The maximum enhancements observed for substrates (5)-(7) are greater than predicted by the phase-separation model.1 The suitability of themodel to describe these reactions is considered.

Synthesis of conjugates of 1-(carboxymethyl)cytosine and 1-(5-O-carboxymethyl-β-D-arabinofuranosyl)cytosine with proteins

1979 ◽  
Vol 44 (10) ◽  
pp. 3023-3032 ◽  
Author(s):  
Helmut Pischel ◽  
Antonín Holý ◽  
Günther Wagner
Keyword(s):  
Human Serum Albumin ◽  
Acetic Anhydride ◽  
Serum Albumin ◽  
Human Serum ◽  
Activated Esters ◽  
Hydrolysis Of

1-(Carboxymethyl)cytosine (Ia), 1-(5-O-carboxymethyl-β-D-arabinofuranosyl)cytosine (IIa) and 5'-O-carboxylmethylcytidine (IIIa) were transformed by treatment with acetic anhydride and 4-dimethylaminopyridine to the peracetyl derivatives Ib-IIIb. These products reacted with p-nitrophenol in the presence of N, N'-dicyclohexylcarbodiimide to give the activated esters Ic-IIIc which on reaction with ammonia, dimethylamine or 2-aminoethanol afforded the corresponding carboxamides Id-IIId, IIe,f. Reactions of Ic and IIc with human serum albumin and bovine γ-globulin at pH 9.2, followed by hydrolysis of the N- or O-acetyl groups at pH 9.5, gave 50% up to 64% yields of the respective conjugates Ig, IIg and Ih, IIh.

scholarly journals Viscoelastic phase separation model for ternary polymer solutions

2021 ◽  
Vol 154 (10) ◽  
pp. 104903
Author(s):  
Kenji Yoshimoto ◽  
Takashi Taniguchi
Keyword(s):  
Phase Separation ◽  
Polymer Solutions ◽  
Ternary Polymer ◽  
Separation Model
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