Allenes [Non-Heterocyclic Building Blocks] — contains compounds with the allene group, namely two consecutive (cumulated) carbon-carbon double bonds that form a distinctive orthogonal geometry and high reactivity. This non-heterocyclic structure makes them versatile building blocks for forming new carbon-carbon bonds in organic synthesis.
Allenes such as boronate derivatives, pentadienes, and allenoate esters are used in cycloaddition, hydrofunctionalization, and transition metal-catalyzed reactions to assemble carbocyclic rings or branched carbon chains. Synthetic chemists utilize allylboronate groups such as 2-Allenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane as partners in allyl addition reactions, while compounds such as 1,2-Pentadiene and 3-Methyl-1,2-butadiene serve as model substrates in the development of new methodologies.
Product examples in this collection: TCI A2086 865350-17-0 2-Allenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, TCI E0820 14369-81-4 Ethyl 2,3-Butadienoate, TCI P0805 591-95-7 1,2-Pentadiene, TCI M0621 598-25-4 3-Methyl-1,2-butadiene.
Note the stability of allenes, which easily isomerize or polymerize, the purity and content of geometric isomers, and the cold storage conditions suitable for volatile compounds such as the pentadiene group. All products are genuine products of Tokyo Chemical Industry (TCI) Japan, with purity, packaging, and storage conditions listed on each item's page.
Other categories at the same level under Non-Heterocyclic Building Blocks, often used together in one laboratory workflow:
Back to Non-Heterocyclic Building Blocks. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — official distributor of TCI Japan in Indonesia — to check availability and lead time directly from Japan.
