ethylation

The most widely practiced example of this reaction is the ethylation of benzene.

Ethylation is the formation of a compound by introduction of the ethyl group.

It is prepared via several steps from catechol, beginning with ethylation to give "guethol" (1).

Strong bases catalyze hydroamination, an example being the ethylation of piperidine using ethylene:

Cu-Y zeolites have been shown to catalyze the ethylation of benzene due to their acidic properties.

On 5 October 1942, a near catastrophe befell (building 300) when an ethylation autoclave caught fire, which threatened the adjacent phosgenation unit.

The latter reaction yielded only the carbonyl oxygen ethylation product as a pair of the geometrical (E/Z) isomers.

The preparation of samples for GC analysis consists of aqueous phase ethylation with NaBEt4 and extraction into hexane.

The phosphates interacting with the B helix termini in the crystal structure correspond exactly to those whose ethylation most strongly interferes with complex formation in solution.

M/ethylation with di(m)ethyl sulfate proceeds on nitrogen with the comcomitant shift of the enamine to afford olefin (5).

These observations, coupled with DNA ethylation data [ 18 ] , indicates that 3' binding is a key element in specific recognition by APEs.

The use of a deficit of methyllithium, however, followed by ethylation, yielded cis-Ph2FGeMn(CO)4C(OEt)Me.

The methodology used is based on a gas chromatography – mass spectrometry search of the prepared compounds in the residue obtained after ethylation, thioacidolysis, and desulfurization of the pulps.

Ethylation of the same species with aqueous Et3OBF4 afforded cis-Ph2FGeMn(CO)4C(OEt)Me.

Methylmercury was determined by KOH/methanol digestion using aqueous phase ethylation, cryogenic gas chromatography, and CVAFS detection.

Sestonic MeHg is determined after acid distillation of the filters, aqueous-phase ethylation, purging onto Tenax®, isothermal gas chromatography separation, and detection by cold-vapor atomic fluorescence spectroscopy.

Originally achieved under reductive amination conditions involving the reaction of the amine with acetaldehyde in the presence of Pt, ethylation of the amino-group has been improved by the use of Ra-Ni and ethanol.

The importance of such bonds for activity was shown in other work, where huAPE1's binding to the DNA backbone is only inhibited by ethylation of the phosphates two and three positions 3' to an abasic site [ 18 ] .

Interestingly, these positions overlap substantially with positions exhibiting ethylation/methylation interference in RSS complexed with RAG1/RAG2 (Figure 2and [ 53]) suggesting that the correlations detected by the models are relevant to RAG-RSS interaction.