Compounds containing two of this functional group in a 1,5-pattern can interconvert in a [3,3]-sigmatropic rearrangement. In the "conjugate addition" of soft nucleophiles, this functional group is added beta to a carbonyl group. The reaction of phosphonium ylides with ketones or aldehydes favors the production of the Z-stereoisomer of these compounds. Because they rapidly decolorize liquid bromine, bromine can be used to test for their presence. The thermodynamic stability of these compounds inc
Compounds containing two of this functional group in a 1,5-pattern can interconvert in a [3,3]-sigmatropic rearrangement. In the "conjugate addition" of soft nucleophiles, this functional group is added beta to a carbonyl group. The reaction of phosphonium ylides with ketones or aldehydes favors the production of the Z-stereoisomer of these compounds. Because they rapidly decolorize liquid bromine, bromine can be used to test for their presence. The thermodynamic stability of these compounds increases with substitution; thus, highly substituted ones are favored in eliminations according to Zaitsev's rule. For 10 points, name this functional group that consists of two sp2-carbon atoms linked together by a double bond.
Compounds containing two of this functional group in a 1,5-pattern can interconvert in a [3,3]-sigmatropic rearrangement.