1bromo11undecene

1-bromo-11-undecene is an organic compound with the chemical formula C11H21Br. It is a bromoalkene, meaning it contains a bromine atom and a carbon-carbon double bond within its structure. The molecule consists of an eleven-carbon chain with a bromine atom attached to the first carbon and a double bond between the eleventh and twelfth (implied) carbon. However, as an undecene, it has eleven carbons in total and the double bond is typically at the terminal end of the chain, making it 1-undecene if the bromine were absent. In 1-bromo-11-undecene, the bromine is located at the primary position (carbon 1) and the double bond is at the terminal position (between carbons 10 and 11, or more precisely, the terminal position of an undecene derivative). This structure means it has both a reactive alkene functional group and a reactive alkyl halide functional group.

This compound is a colorless liquid at room temperature. Its properties are characteristic of both alkenes and alkyl bromides. The double bond can undergo addition reactions, such as halogenation, hydrohalogenation, and polymerization. The carbon-bromine bond is susceptible to nucleophilic substitution reactions. Due to these reactive sites, 1-bromo-11-undecene serves as a versatile building block in organic synthesis. It is often used to introduce an eleven-carbon chain with a terminal alkene into larger molecules or to create cyclic structures through intramolecular reactions. It is synthesized through various methods, typically involving the functionalization of undecylenic acid or related precursors. Its applications are primarily in research laboratories for the synthesis of more complex organic molecules, including polymers, pharmaceuticals, and specialty chemicals.