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10 votes
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Why do we use Δ to mean heating?

The retrieval of this symbol history poses a considerable challenge, as it is scarcely mentioned in textbooks, Google Books and Google Scholar. The current application of the triangle symbol, distinct ...
AChem's user avatar
  • 41.1k
7 votes

Why do we use Δ to mean heating?

It can be mentioned that the triangle was used as the Alchemical symbol for fire in ancient times. However I don't know if it has been in continuous use as a reaction-symbol that way since, or if it ...
FrodeM's user avatar
  • 79
2 votes

Aza-enolates: why no reaction at N

Generally, aza-enolates are generated by reaction of hindered primary amines with aldehydes/ketones and subsequent acid-base reaction with a strong base like LDA. The direct attack from 'N' is ...
Fenil Patel's user avatar
1 vote

Approximate calculations of the product distribution under kinetic control

Quick Answer The relative product concentrations are dependent on $\Delta E_a$, $T$, orders, and reversibility of the reactions. It would be inaccurate to specify relative product concentrations ...
ananta's user avatar
  • 2,307
1 vote

Approximate calculations of the product distribution under kinetic control

I am afraid you have to use either the Arrhenius or the Eyring equation to get a rough estimate of the product distribution. If you assume that the pre-exponential terms in either of these equations ...
PAEP's user avatar
  • 1,067
1 vote

How much can we extend the Finkelstein reaction?

The Finkelstein doesn’t occur on alkyl fluorides because it is an equilibrium $S_N2$ process, and the C–F bond is very strong, so the reaction rate is reduced. You can also think of it as the ...
thelocalsage's user avatar
  • 1,247

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