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This cycloaddition reaction involves sixteen electrons; hence, it must be suprafacial on one component and antarafacial on the other. Thus, it must be a [14s + 2a] or a [14a + 2s] cycloaddition. The heptafulvene molecule is large enough that its p-electron system can twist without introducing too much strain or without losing too much p-electron overlap; hence, the cycloaddition is a [14a + 2s] process. In either case, the product has the following stereochemistry:
Being simultaneously basic and acidic, water undergoes autoprotolysis, also called self-ionization: The equilibrium constant is H3O+ in these equations is gene
glycerol,synthesis from propane
why lithium is the strongest reducing agent in alkali metals
Why li 2 CO 3 decomposed at a lower temperature whereas Na2CO3 at higher temp?
Question: (a) Explain why metals are mostly ductile and ceramics brittle at room temperature. (b) Describe what you understand by the following terms. Use appropriate il
give answer
A lab report on the criteria for determining the purity of organic compounds
illustrate edman degradation and explain its importance
find the equivalent weight of KMnO4
mixture of NH4CL & HCL v/s NaOH
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