Baumann, Manfred et al. published their research in Synthesis in 1977 | CAS: 28322-40-9

Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Quality Control of Isopentyltriphenylphosphonium bromide

2(E), 4(Z)-Alkadienoates using the Wittig reaction was written by Baumann, Manfred;Hoffmann, Werner. And the article was included in Synthesis in 1977.Quality Control of Isopentyltriphenylphosphonium bromide This article mentions the following:

2(E),4(Z)-RCH:CHCH:CHCO2Et (R = Et, Pr, Me2CHCH2, pentyl, hexyl, heptyl) with fruit-like odors were prepared in 57-73% yields by treating (E)-OHCCH:CHCO2Et with RCH2P+Ph3Br– in the presence of NaNH2. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Quality Control of Isopentyltriphenylphosphonium bromide).

Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Organo bromine compounds are versatile compounds and are widely used in diverse fields. Organo bromine derivatives are used in the dye sector, as an indicator in analytical chemistry (Bromothymol blue is a popular indicator). Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Quality Control of Isopentyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary