In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Murai, Masahito; Nishimura, Kengo; Takai, Kazuhiko. HPLC of Formula: 1530-32-1. The article was titled 《Palladium-catalyzed double-bond migration of unsaturated hydrocarbons accelerated by tantalum chloride》. The information in the text is summarized as follows:
The operationally simple palladium-catalyzed double-bond migration without heteroatom-containing coordinating functional groups was described. Addition of TaCl5 as a second catalyst greatly enhanced the migration efficiency to provided β-alkylstyrenes through migration of up to a five-carbon chain. Both catalysts were com. available and the reaction occurred without external ligands under neutral conditions. The reaction proceeded via generation of π-allyl palladium species, which enabled the chemoselective double-bond migration of hydrocarbons in the presence of allyl ethers. Remote functionalization through double-bond migration was also demonstrated using FeCl3 as a second catalyst. In the experiment, the researchers used Ethyltriphenylphosphonium bromide(cas: 1530-32-1HPLC of Formula: 1530-32-1)
Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.HPLC of Formula: 1530-32-1
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary