Butan-2-yl (sec-butyl) group is chiral. The carbon atom at position 2 is a stereocenter . It has four different groups attached: −H , −CH 3 , −CH 2 −CH 3 , and −R (the R group is not equal to those three groups).

Secondary (Sec) With butyl straight-chain alkyl groups there is the possibility of a connection on the second carbon from the end of the chain. These alkyl groups are given the prefix " Sec.

The structure of the sec-butyl group is – CH 3 – CH 2 – CH(CH 3) –. The s – denotes secondary because it attaches to the chain’s secondary carbon. In common names, it is also referred to as sec-butyl.

The prefix sec- is used when a functional group is bonded to a secondary carbon of an alkane chain. A secondary carbon has two carbon neighbors. The sec- prefix is commonly used for four carbon alkyl chains—for example, sec-butyl.

Nov 10, 2011 · There is no “secondary butane” but there is “sec-butyl” which is when we take a hydrogen off of C2 of butane and stick it on something. Isobutane is the molecule formally called “2-methylpropane” .

Jan 2, 2020 · The butyl functional group can have four different conformations: n-butyl, s-butyl, t-butyl, and isobutyl. This article helps name the different forms.

Isobutyl and sec-butyl are two common alkyl groups that are frequently encountered in organic chemistry. These groups differ in their structural arrangement, which leads to distinct chemical and physical properties.