Palladium catalysed oligomerization of 1-alkynes

The oligomerization of 1-pentyne using palladium acetyl acetonate catalyst with various solvents and ligands was investigated. An equimolar mixture of HOAc and Et N proved to be a superior solvent. The major product observed in most cases was the dimer, 6-methylene-nona-yne, although both cis and trans-dect-ene-6-yne were observed in most cases. Trimers were formed when phosphines were replaced with bldentate amines or phosphite ligands. A one to one mixture of PPh and (CH ) P gave the highest yield of oligomers with 6-methylene-nona-4-yne as the major product. No aromatics were formed with any of the reaction systems studied. The general mechanism proposed, by Meriwether and elaborated by Maitlis is in agreement with these results.

Name thesis:degree_name

Master of Arts

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Natural Sciences

Grantor

Rice University

Year dc:date.issued

1975

Author dc:creator

• Hunt, Ann Louise Beal

Advisor dc:contributor.advisor

• Billings, W. E.

Statement dc:rights

• Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1911/104379

OAI identifier oai:identifier

oai:repository.rice.edu:1911/104379