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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:
Reference solution: A proper reference solution contains color reagent plus sample buffer. The difference between the reference and a sample is that the concentration of
Acyclic or open-chain compounds Organic compounds where all types of the carbon atoms are associated to one another to form open chains (straight or branched) are known as acyc
Nitration or Direct method The number of - NO 2 groups introduced in benzene nucleus relies upon the nature and concentration of the nitrating agent, temperature of nitration
For a hydrogen atom, calculate the wavelength (in nm) of an emitted photon in the Lyman series that results from the transition n = 3 to n = 1
Which of the following metal ions will have maximum number of unpaired electrons: (1) Fe +2 (2) Co +2 (3) Ni +2
Preparation of dihydric alcohols
Q. Explain about Gravity Separation? This is one of the simplest processes of concentration of ores. It is based on the difference in the specific gravities of the gangue and o
1 gm of a metallic oxide on reduction gives 0.68 gm of the metal. ans) Mass of metal/mass of oxygen=eq. mass of metal/eq. mass of oxygen. applying this we get .68/.32=x/8 x=1
#question.what is chemical structures and names of first 20 mono carboxylic acid? .
density of gas is 2.86 ltr.the gas maz be-
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