Examples of 'alkylation step' in a sentence
Meaning of "alkylation step"
alkylation step: A specific procedure within a process where an alkyl group is added to a compound
How to use "alkylation step" in a sentence
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alkylation step
The alkylation step is carried out in a suitable solvent.
This solution is used as such for the alkylation step.
It is an alkylation step at a position of carboxylic acid ester IIc or nitrile IIa.
The isolated product is used directly in the alkylation step.
The alkylation step may be carried out batchwise or on a continuous basis.
The aromatic hydrocarbon used in the alkylation step is preferably benzene.
This alkylation step produces the quaternary ammonium ester of the invention.
A base catalyst as described herein maybe optionally employed in the alkylation step.
The chiral alkylation step produces an enantiomerically enriched borane protected ligand.
The variable in this example was the pressure used in the alkylation step.
The present invention involves a liquid phase alkylation step coupled with a vapor phase transalkylation step.
Processes herein can have one or more steps following the alkylation step.
It is an alkylation step of a cyclic ketone derivative La.
Such mixture is a suitable feed for the alkylation step of the instant process.
The procedure is essentially as described above except for the following reductive alkylation step.
See also
A Mitsunobu step is substituted for the alkylation step as described below.
The first process uses hydrofluoric acid as an acidic catalyst during the benzene alkylation step.
This catalyst is useful for the alkylation step identified as step I in the claims hereinafter.
The resulting alcohol can then be converted to the corresponding triflate for the alkylation step.
Triazole C was carried on to the alkylation step without any further purification.
The alkylation step is carried out as follows,.
The alkyl halide may in turn be used for the alkylation step as described above.
The alkylation step is different, as described below.
The present invention chiefly relates to the epichlorohydrin alkylation step and beyond as described above.
This alkylation step is depicted as follows,.
In certain embodiments, the lipidoids are subsequently subjected to an alkylation step e.
Then, the effect of omission of the alkylation step after reduction was studied.
Both processes introduce a benzene-containing effluent to the alkylation step.
Typically, the alkylation step will occur before any deprotecting step, if needed.
When desired, the obtained compound can be subjected to an alkylation step.
Alternatively, use of chloroacetamide in the alkylation step followed by acid hydrolysis produces bendazac instead.
The alkylation step is carried out in a suitable solvent that includes methyl-t-butyl ether.
Alternately, an appropriately substituted benzyl halide may be used for the first alkylation step.
This alkylation step corresponds to the general Step 3 referred to above.
The process of claim 4, wherein the alkylation step ( a ) is conducted in the liquid phase.
It may be desirable to deprotect the 2 ' - hydroxy group of compound 2 before the alkylation step.
Preferably, the alkylation step ( a ) is conducted in the liquid phase.
Preferably, the silylated compound formed in step ( i ) is not isolated before the alkylation step.
Preferably, the alkylation step ( a ) is conducted under at least partial liquid phase conditions.
In preferred embodiments, R is tert - butyloxycarbonyl and the alkylation step employs 1,3-dichloropropene.
Step I-1 It is an alkylation step of a cyclic ketone derivative La.
In another mode, the alkylation step is run in presence of 5 x to 10 x excess of arene.
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