Because the type of bond they have restricts rotation, these organic compounds have cis and trans isomers.
These react with carbenoids to form cyclopropane in the Simmons-Smith reaction. The alpha type can be polymerized by Ziegler-Natta catalysts, and their hydrohalogenation is governed by Markovnikov's rule. Highly substituted ones have Z and E isomers. Functional groups derived from compounds of this type include allyl and vinyl. Because the type of bond they have restricts rotation, these organic compounds have cis and trans isomers. Their general formula, the same as that of cycloalkanes, is CnH2n [cee en aitch two en]. Sometimes called olefins, for 10 points, name these unsaturated hydrocarbons with at least one carbon-carbon double bond, the simplest of which is ethylene.
These react with carbenoids to form cyclopropane in the Simmons-Smith reaction.
{alkenes} (do not accept “alkane” or “alkyne”, accept “{olefins}” before mentioned)