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Clar's rule has also been supported by experimental results about the distribution of π-electrons in polycyclic aromatic hydrocarbons, [7] valence bond calculations, [8] and nucleus-independent chemical shift studies. [9] Clar's rule is widely applied in the fields of chemistry and materials science.
In this organic reaction, a tertiary alcohol is cleaved in an organic oxidation by a peroxyacid to a ketone.The acid used is often p-nitroperoxybenzoic acid because the p-nitrobenzoic acid anion is a good leaving group.
Erich Clar (23 August 1902 – 27 March 1987) was an Austrian organic chemist, born in Hřensko, who studied polycyclic aromatic hydrocarbon chemistry. He is considered as the father of that field. [ 1 ]
The Yukawa–Tsuno equation, first developed in 1959, [1] is a linear free-energy relationship in physical organic chemistry.It is a modified version of the Hammett equation that accounts for enhanced resonance effects in electrophilic reactions of para- and meta-substituted organic compounds.
Scheme 1: Danheiser Benzannulation Reaction of an Alkyne and a Cyclobutenone(X= OR, SR, NR2) The Danheiser benzannulation is a regiocontrolled phenol annulation. This annulation provides an efficient route to form an aromatic ring in one step. [5]
Image source: Getty Images. But that plan won't revolve around the famous 4% rule.And you may want to consider an alternative solution if you've been told to follow the 4% rule yourself.
The Auwers synthesis is a series of organic reactions forming a flavonol from a coumarone.This reaction was first reported by Karl von Auwers in 1908. [1] [2] [3] [4 ...
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