How to use in-sentence of “alkyl”:
+ An alkyl is a piece of a molecule that makes it do or act a certain way.
+ Thermal alkyl shifts, similar to hydride shifts, must proceed antarafacially.
+ Additionally, an effective catalyst for the couplings of alkyl halides is dilithium tetrachlorocuprate in THF.
+ Stability of the carbocation increases with the number of alkyl groups bonded to the charge-bearing carbon.
+ S2 reactions are generally favored in primary alkyl halides or secondary alkyl halides with an aprotic solvent.
+ For instance, it is possible to get a contact ion pairs formed from an alkyl halide in which the ions are not fully separated.
+ The S1 mechanism therefore dominates in reactions at tertiary alkyl centers and is further observed at secondary alkyl centers in the presence of weak nucleophiles.
+ In the compound on the right, the diene is homoannular with 4 alkyl substituents.
