Questions tagged [enolate-chemistry]
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-2
votes
2answers
34 views
Less substituted vs more substituted alkene [closed]
In general, more substituted alkenes are more thermodynamically stable. However, in certain cases such as enamine alkylation, the less substituted double bond is favored. How do we know that which is ...
3
votes
1answer
110 views
How does base size affect the ratio of kinetic/thermodynamic enolate?
One of the factors that favor kinetic products is bulky bases. So, I'd expect that, for a certain substrate, the use of a more bulky base to favor even more the kinetic product.
However, in the table ...
3
votes
0answers
34 views
Claisen-like condensation with acid chloride
In the Claisen condensation, an ester enolate attacks an ester, with an alkoxide anion leaving subsequently to give a $\beta$-keto ester. Is it possible for a typical enolate of an aldehyde or ketone ...
5
votes
0answers
47 views
Increasing C-alkoxycarbonylation of enolates
I am working with N-tosyl-2-piperidone and attempts to use the lithium enolate of this compound to perform an nucleophilic acyl substitution reaction on an several chloroformate esters in THF has lead ...
2
votes
0answers
119 views
Does the amine used to generate the enolate affect the selectivity of an Evans aldol reaction?
In an Evans aldol reaction, the enolate is typically generated by addition of a boron Lewis acid (e.g. $\ce{(n-Bu)2BOTf}$) and an amine, which acts as a weak base. I'd like to know whether there's any ...
