ChemInform Abstract: CHIRAL CROWN ETHER SYNTHESIS BY CATALYSIS IN A TWO-PHASE SYSTEM

1979 ◽  
Vol 10 (43) ◽  
Author(s):  
P. DICESARE ◽  
B. GROSS
Keyword(s):  
Crown Ether ◽  
Phase System ◽  
Two Phase ◽  
Chiral Crown Ether ◽  
Ether Synthesis

Crown Ether-Catalyzed Synthesis of Fulvenes in a Solid-Liquid Two-Phase System

Synthesis ◽  
1980 ◽  
Vol 1980 (10) ◽  
pp. 799-799 ◽  
Author(s):  
Howard Alper ◽  
David E. Laycock
Keyword(s):  
Crown Ether ◽  
Phase System ◽  
Two Phase ◽  
Solid Liquid

Crown Ether Catalyzed Stereoselective Synthesis of Vinyl Ethers in a Solid Liquid Two-Phase System

Synlett ◽  
1996 ◽  
Vol 1996 (09) ◽  
pp. 880-882 ◽  
Author(s):  
Giuseppe Bellucci ◽  
Cinzia Chiappe ◽  
Giacomo Lo Moro
Keyword(s):  
Crown Ether ◽  
Stereoselective Synthesis ◽  
Phase System ◽  
Vinyl Ethers ◽  
Two Phase ◽  
Solid Liquid

Chiral Crown Ether Synthesis by Catalysis in a Two Phases System

Synthesis ◽  
1979 ◽  
Vol 1979 (06) ◽  
pp. 458-461 ◽  
Author(s):  
Pierre Di Cesare ◽  
Bernard Gross
Keyword(s):  
Crown Ether ◽  
Chiral Crown Ether ◽  
Two Phases ◽  
Ether Synthesis

On the Problem of “Two-Phase” Activated Sludge

1991 ◽  
Vol 24 (7) ◽  
pp. 59-64 ◽  
Author(s):  
R. W. Szetela
Keyword(s):  
Activated Sludge ◽  
Single Phase ◽  
Phase System ◽  
Two Phase ◽  
Wastewater Treatment Process ◽  
Sludge Stabilization ◽  
Technological Advantage ◽  
In Series ◽  
State Models ◽  
Activated Sludge Systems

Steady-state models are presented to describe the wastewater treatment process in two activated sludge systems. One of these makes use of a single complete-mix reactor; the other one involves two complete-mix reactors arranged in series. The in-series system is equivalent to what is known as the “two-phase” activated sludge, a concept which is now being launched throughout Poland in conjunction with the PROMLECZ technology under implementation. Analysis of the mathematical models has revealed the following: (1) treatment efficiency, excess sludge production, energy consumption, and the degree of sludge stabilization are identical in the two systems; (2) there exists a technological equivalence of “two-phase” sludge with “single-phase” sludge; (3) the “two-phase” system has no technological advantage over the “single-phase” system.

Interphase distribution of 2-furylethylenes

1985 ◽  
Vol 50 (8) ◽  
pp. 1642-1647 ◽  
Author(s):  
Štefan Baláž ◽  
Anton Kuchár ◽  
Ernest Šturdík ◽  
Michal Rosenberg ◽  
Ladislav Štibrányi ◽  
...  
Keyword(s):  
Partition Coefficient ◽  
Partition Coefficients ◽  
Transport Rate ◽  
Phase System ◽  
Two Phase ◽  
Interphase Distribution ◽  
Distribution Kinetics ◽  
System 1 ◽  
Kinetics Of

The distribution kinetics of 35 2-furylethylene derivatives in two-phase system 1-octanol-water was investigated. The transport rate parameters in direction water-1-octanol (l1) and backwards (l2) are partition coefficient P = l1/l2 dependent according to equations l1 = logP - log(βP + 1) + const., l2 = -log(βP + 1) + const., const. = -5.600, β = 0.261. Importance of this finding for assesment of distribution of compounds under investigation in biosystems and also the suitability of the presented method for determination of partition coefficients are discussed.

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