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.
It would depend on where on your leg the tingling is. Also, is there any numbness in the same area.   If the tingling and possibly numbness is on the back of your leg, aâ¦nywhere from your butt, back of the thighs, behind your knee or in the calf, it could be a pinched sciatic nerve.   The sciatic nerve can cause pain, numbness and or tingling on the back of your leg.