As we saw in chapter 10, the positions adjacent to C=C, the allylic position, often show enhanced reactivity compared to simple alkanes due to the proximity of the adjacent p system. Similarly, the positions adjacent to a benzene ring, known as the benzylic position also show enhanced reactivity compared to simple alkanes. Students often confuse the term benzyl with phenyl, for example compare the location of the bromine atoms in Bromobenzene and benzyl bromide: Highlight benzylic carbon atom.
A probable cause of numbness in the upper, outer thigh is meralgia paresthetica, a condition that occurs when the nerve that provides sensation to the thighâs surface is compressed, according to Mayo Clinic. It often occurs on one side of the body and worsens upon walking or standing. Continue Reading.
Leg numbness can be a symptom of a wide variety of diseases, disorders or conditions that either restrict blood flow or cause injury to the nerves. Temporary leg numbness can occur after prolonged pressure on a nerve or nerves, such as after sitting cross legged or bicycling long distance.Leg numbness can occur with moderate to serious orthopedic conditions that can lead to spinal or peripheral nerve damage. More serious conditions include multiple sclerosis.emporary leg numbness can occur after prolonged pressure on a nerve or nerves, such as after sitting cross legged or bicycling long distance. Leg numbness can occur with moderate to serious orthopedic conditions that can lead to spinal or peripheral nerve damage.