racemization

An example of such an effect is the racemization of 9,10-dihydro-4,5-dimethylphenanthrene.

A physical processes, the racemization of the bipyridyl shown below was chosen.

The amino acid racemization process has provided the scientific basis for these claims.

To solve the problem of racemization, triazoles were introduced.

Racemization of pharmaceutical drugs, however, can occur in vivo.

The chiral centers of a polypeptide chain can undergo racemization.

Data from the geochronological analysis of amino acid racemization has been building for thirty-five years.

At the end of the reaction the auxiliary is removed, under conditions that will not cause racemization of the product.

Racemization of the amino acids also tends to be minimal, due to mild reaction conditions.

Racemization can also occur in a chemical interconversion.

The accuracy of this technique has been questioned because racemization does not correlate well with other dating methods.

On a trivial level, racemization can be achieved by simply mixing equal quantities of two pure enantiomers.

The final step is racemization.

An alternative pathway for the racemization of these same complexes is the Ray-Dutt twist.

Also, D/L concentration thresholds appear to occur as sudden decreases in the rate of racemization.

Strong acidity and mild to strong alkalinity induce greatly increased racemization rates.

This symmetry explains the observed racemization.

On the other hand, experiments with radical traps and the observation of racemization during substitution suggest a radical mechanism.

This mechanism can result in either inversion or retention of configuration; usually both occur equally, resulting in racemization.

S1 reactions are associated with the racemization of the compound, as the trigonal planar carbocation may be attacked from either face.

The results of these experiments conclude that there is no significant effect of racemization on gyrase inhibition or vice versa.

Racemization can occur to either the CDA or the substrate and in both cases it has the potential to significantly effect the results.

Here, racemization occurs with loss of the acetate, forming a cationic complex with the transition metal center, as shown below.

These are important for amino acid dating because racemization occurs much faster in warm, wet conditions compared to cold, dry conditions.

Amino acid racemization also has a role in tissue and protein degradation studies, particularly useful in developing museum preservation methods.