Shioiri, Takayuki et al. published their research in Tetrahedron in 1998 | CAS: 28322-40-9

Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Application In Synthesis of Isopentyltriphenylphosphonium bromide

Synthesis of topostins B567 and D654 (WB-3559D, flavolipin), DNA topoisomerase I inhibitors of bacterial origin was written by Shioiri, Takayuki;Terao, Yoshihiro;Irako, Naoko;Aoyama, Toyohiko. And the article was included in Tetrahedron in 1998.Application In Synthesis of Isopentyltriphenylphosphonium bromide This article mentions the following:

Topostins B567 and D654 (WB-3559D, flavolipin) have been efficiently synthesized from 1,10-decanediol in 11 and 13 steps, resp., involving an asym. hydrogenation of the β-keto ester Me2CH(CH2)11COCH2CO2Et using (R)-BINAP ruthenium bromide and a peptide coupling using di-Et phosphorocyanidate (DEPC, (EtO)2P(O)CN) as key steps. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Application In Synthesis of Isopentyltriphenylphosphonium bromide).

Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Application In Synthesis of Isopentyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary