Selective hydroboration of alkenes and alkynes in the presence of aldehydes and ketones
Article Abstract:
Reactions of terminal alkenes with various borane reagents when aldehydes or ketones are present have been studied. Selective hydroboration of a terminal alkene when a ketone or aldehyde is present is highest in efficiency when dicyclohexylborane is the hydroboration agent. Hydroboration of alkynyl aldehydes and alkynyl ketones with dicyclohexylborane gives corresponding olefinic carbonyl compound products following protonation or dicarbonyl compounds following oxidation.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
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The reactivity of the high-energy intermediates formed in the reactions of Group 13 metal atoms and aromatic alkenes
Article Abstract:
Organoaluminum intermediates can be formed by the reaction of aromatic alkenes and Group 13 metal atoms in a rotating cryostat reactor. 2-phenylaluminacyclopropane, cis- and trans-3,4-diphenylaluminacyclopentane, and cis- and trans-2,4-diphenylaluminacyclopentane are produced in a reaction of aluminum atoms with styrene. Reactions of aluminum and alpha-methylstyrene produce 2-methyl-2-phenylaluminacyclopropane and 3,4-dimethyl-3,4-diphenylaluminacyclopentane.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
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On the possibility of conversion of strained bridgehead alkenes into carbenes via 1,2 hydrogen and 1,2 carbon migrations: a theoretical study of the rearrangements in the adamantene and protoadamantene systems
Article Abstract:
The possibility of conversion of strained bridgehead alkenes to carbenes has been studied. The mechanism would procede via 1,2-carbon and 1,2-hydrogen migration. A theoretical study has been made of rearrangements in the protoadamantene and adamantene systems. High-level ab initio computations were used.
Publication Name: Canadian Journal of Chemistry
Subject: Chemistry
ISSN: 0008-4042
Year: 1998
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