scholarly journals Prediction of the efficiency of diastereoisomer separation on the basis of the behaviour of enantiomeric mixtures

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21254-21261 ◽  
Author(s):  
Emese Pálovics ◽  
Zsolt Szeleczky ◽  
Balázs Fődi ◽  
Ferenc Faigl ◽  
Elemér Fogassy
Keyword(s):  
Eutectic Composition ◽  
Racemic Compound ◽  
Dominant Effect

The composition of a crystalline diastereoisomer (eeDIA) is determined either by the eutectic composition of the racemic compound (eeEuRac) or that of resolving agent (eeEuRes) and the higher ee value has the more dominant effect.

scholarly journals Eutectic Composition of a Chiral Mixture Containing a Racemic Compound

2007 ◽  
Vol 11 (2) ◽  
pp. 293-293
Author(s):  
Yaling Wang ◽  
Rosario LoBrutto ◽  
Robert W. Wenslow ◽  
Ivan Santos
Keyword(s):  
Eutectic Composition ◽  
Racemic Compound

scholarly journals Effect of the Enantiomeric Ratio of Eutectics on the Results and Products of the Reactions Proceeding with the Participation of Enantiomers and Enantiomeric Mixtures

Chemistry ◽  
2020 ◽  
Vol 2 (3) ◽  
pp. 787-795
Author(s):  
Emese Pálovics ◽  
Dorottya Fruzsina Bánhegyi ◽  
Elemér Fogassy
Keyword(s):  
Charge Distribution ◽  
Eutectic Composition ◽  
The Self ◽  
Combined Effect ◽  
Chiral Molecule ◽  
Racemic Compound ◽  
Enantiomeric Ratio

This perspective is focused on the main parameters determining the results of crystallization of enantiomers or enantiomeric mixtures. It was shown that the ratio of supramolecular and helical associations depends on the eutectic composition of the corresponding enantiomeric mixture. The M and P ratios together with the self-disproportionation (SDE) of enantiomers define the reaction of the racemic compound with the resolving agent. Eventually, each chiral molecule reacts with at least two conformers with different degrees of M and P helicity. The combined effect of the configuration, charge distribution, constituent atoms, bonds, flexibility, and asymmetry of the molecules influencing their behavior was also summarized.

Eutectic Composition of a Chiral Mixture Containing a Racemic Compound

2005 ◽  
Vol 9 (5) ◽  
pp. 670-676 ◽  
Author(s):  
Yaling Wang ◽  
Rosario LoBrutto ◽  
Robert W. Wenslow ◽  
Ivan Santos
Keyword(s):  
Eutectic Composition ◽  
Racemic Compound

scholarly journals Possibilities of Exploiting Kinetic Control in the Continuous Fractional Crystallization of Diastereomeric Mixtures

Symmetry ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1516
Author(s):  
Dorottya Fruzsina Bánhegyi ◽  
Elemér Fogassy ◽  
Emese Pálovics
Keyword(s):  
Fractional Crystallization ◽  
Eutectic Composition ◽  
Kinetic Resolution ◽  
Kinetic Control ◽  
Racemic Compound ◽  
Rapid Crystallization ◽  
Diastereomeric Salts ◽  
Diastereomeric Purity

For rapid and kinetic control-influenced resolutions, it is advisable to choose a resolving agent with the highest possible eutectic composition (eeEuResAg). It may also be advantageous to add the crystalline resolving agent directly to the solution of the racemic compound. In addition, the use of a quasi-racemic resolving agent or amphoteric resolving agent can provide kinetic resolution. In some cases, the continuous fractional crystallization of diastereomeric salts requires the salt of the resolving agent (Ca2+, Na+, etc.) or other achiral additives (thiourea) that cause rapid crystallization and provide high diastereomeric purity. A further advantage may be the sequential use of the same resolving agent that is capable of forming crystalline diastereomers with both enantiomers when using kinetic control (tandem resolution).

Analisis Pengaruh Kepemimpinan dan Komunikasi Terhadap Motivasi dan Kinerja Pegawai (Satuan Polisi Pamong Praja Kota Surabaya)

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Muhammad Rodhiyallah ◽  
Amiartuti Kusmaningtyas ◽  
Hendro Tjahjono
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Sampling Technique ◽  
Employee Motivation ◽  
Leadership Communication ◽  
Dominant Effect ◽  
And Performance

The aim of the study was to analyze and determine the influence of leadership and communication, on employee motivation and performance at Satuan Polisi Pamong Praja Kota Surabaya. Branch, as many as 100 persons. Sampling technique samples (Slovin) data was analyzed with multiple linear regression with SPSS for windows program. The result of the research indicated that leadership, communication, and motivation simultaneously have significant effect on employees’ performances with determination value of 0,424 or 4,24%. Leadership, communication and motivation partially has significant effect on performance. Communication itself has dominant effect on employee’s performance.

The Effect of Interest, Religious Stimuli, and the Consumer’s Trust on the Digital Al Qur’an Purchase

2018 ◽  
pp. 89
Author(s):  
Sokhikhatul Mawadah ◽  
Nurudin Nurudin
Keyword(s):  
P Value ◽  
Dominant Effect ◽  
Purchasing Decision ◽  
A Company

PT Tigaraksa Satria branch of Semarang, is a company which runs the digital Al Qur’an product as one of its type of business’s engagement. One of the digital Al Qur’an to be sold is Mushaf Grand Maqomat. PT Tigaraksa Satria also produces Mushaf for Woman and Mushaf Maqomat for Kids. Among these three Mushaf, Mushaf Grand Maqomat-has the less selling. This study is expected to measure and analyzing the effect of interest, religious stimuli, and consumers’ trust on the decision to purchase digital Al Qur’an. It is suspected that variable of religious stimuli has the most dominant effect to the consumers. The population in this study are the current consumers of digital Al Qur’an on PT Tigaraksa Satria. The result of this study indicates that variable of interest has significant effect on the purchasing’s decision. This is resulted on p-value (sig) that is 0.001 under 0.05, the variable of stimuli has significant effect on purchasing decision indicated by 0.755 as the p-value (sig) above 0.05. Whilst, the most dominant variable that influences buyers in purchasing Al Qur’an is the religious stimuli, accordingly to the researcher’s hypothesis that states religious stimuli is the most dominant variable.

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