1243250-80-7

Upstream product

• 1243250-79-4 C₄₆H₆₈OSi 
• 194015-15-1 [2-(2,5-dihexyl-4-iodophenyl)ethynyl](trimethyl)silane 
• 220280-78-4 1-ethynyl-2,5-dihexyl-4-(3-hydroxyprop-1-ynyl)benzene 
• 220280-73-9 3-(2,5-Dihexyl-4-trimethylsilanylethynyl-phenyl)-prop-2-yn-1-ol 
• 220280-80-8 3-(4-{2,5-Dihexyl-4-[(triisopropylsilanyl)-ethynyl]-phenylethynyl}-2,5-dihexyl-phenyl)-prop-2-yn-1-ol 

Downstream Products

• 1243250-81-8 C₄₂H₅₈ 
• 1243250-82-9 C₈₈H₁₃₀Si₂ 
• 1243250-83-0 C₈₂H₁₁₄ 

Relevant academic research and scientific papers

Synthesis, chiroptical behavior, and sensing of carboxylic acid functionalized poly(phenylene ethynylene-alt-bithiophene)s

Several poly(phenylene ethynylene-alt-bithiophene)s with (chiral) nonfunctionalized substituents were synthesized with a variable phenylene ethynylene (PE) spacer length (up to 4 repeating units). The chiroptical behavior was evaluated with UV-vis and cir

Polar tagging in the synthesis of monodisperse oligo(p-phenyleneethynylene) s and an update on the synthesis of oligoPPEs

One important access to monodisperse (functionalized) oligoPPEs is based on the orthogonality of the alkyne protecting groups triisopropylsilyl and hydroxymethyl (HOM) and on the polar tagging with the hydroxymethyl moiety for an easy chromatographic separation of the products. This paper provides an update of this synthetic route. For the deprotection of HOM protected alkynes, γ-MnO2 proved to be better than (highly) activated MnO 2. The use of HOM as an alkyne protecting group is accompanied by carbometalation as a side reaction in the alkynyl-aryl coupling. The extent of carbometalation can be distinctly reduced through substitution of HOM for 1-hydroxyethyl. The strategy of polar tagging is extended by embedding ether linkages within the solubilising side chains. With building blocks such as 1,4-diiodo-2,5-bis(6-methoxyhexyl) less steps are needed to assemble oligoPPEs with functional end groups and the isolation of pure compounds becomes simple. For the preparation of 1,4-dialkyl-2,5-diiodobenzene a better procedure is presented together with the finding that 1,4-dialkyl-2,3-diiodobenzene, a constitutional isomer of 1,4- dialkyl-2,5-diiodobenzene, is one of the byproducts.