A carbonyl and one of these groups form oxitanes in the Paterno-Buchi reaction. The acid catalyzed addition of aldehydes to these groups occurs in the Prins reaction. An intramolecular version of a reaction named for this functional group is named for Conia. Ruthenium and Molybdenum catalysts (*) aid metathesis of these functional groups in reactions discovered by Grubbs and Schrock. An alcohol group is added to this group in both oxymercuration-demercuration and hydroboration reactions Groups which are adjacent to this functional group are known as vinyl. Poisoning of Lindlar's catalyst causes it to form this group instead of completing hydrogenation. The formula "C-n H-2n" represents an n-carbon chain with one of these groups. For 10 points, name this functional 
A carbonyl and one of these groups form oxitanes in the Paterno-Buchi reaction. The acid catalyzed addition of aldehydes to these groups occurs in the Prins reaction. An intramolecular version of a reaction named for this functional group is named for Conia. Ruthenium and Molybdenum catalysts (*) aid metathesis of these functional groups in reactions discovered by Grubbs and Schrock. An alcohol group is added to this group in both oxymercuration-demercuration and hydroboration reactions Groups which are adjacent to this functional group are known as vinyl. Poisoning of Lindlar's catalyst causes it to form this group instead of completing hydrogenation. The formula "C-n H-2n" represents an n-carbon chain with one of these groups. For 10 points, name this functional group with a carbon-carbon double bond.
A carbonyl and one of these groups form oxitanes in the Paterno-Buchi reaction.
alkene [prompt on double bond before measured]