Scandium-bipyridine-catalyzed enantioselective aminolysis of meso-epoxides was written by Mai, Enzo;Schneider, Christoph. And the article was included in Chemistry – A European Journal in 2007.Safety of Isopentyltriphenylphosphonium bromide This article mentions the following:
The scandium-bipyridine-catalyzed enantioselective addition of anilines and O-alkyl hydroxylamines to meso-epoxides has been optimized and extended to a broad range of epoxides and amines. Whereas aromatic meso-epoxides generally furnished the corresponding 1,2-amino alcs., e.g., I, in excellent enantioselectivities, aliphatic meso-epoxides only gave rise to moderate enantioselectivities in the aminolysis. The catalyst loading may be lowered to just 5 mol% with only marginal effects on yield and enantioselectivity. A strong pos. nonlinear effect has been observed, pointing to aggregation phenomena of the catalyst. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Safety 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). One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Safety of Isopentyltriphenylphosphonium bromide
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary