Stereoselective protonation of 2-methyl-1-tetralone lithium enolate catalyzed by salan-type diamines was written by Lowicki, Daniel;Watral, Justyna;Jelecki, Maciej;Bohusz, Wiktor;Kwit, Marcin. And the article was included in Tetrahedron in 2021.SDS of cas: 76-83-5 This article mentions the following:
An efficient enantioselective protonation of 2-methyl-1-tetralone lithium enolate catalyzed by salan-type diamines I (Y = H, Me; X = H, OH, OMe; Z = t-Bu, H, NO2, Br, OMe; R = H, t-Bu, triphenylmethyl) and IInod t-bu was reported. A broad series of salan-type catalysts I and II was synthesized, including several previously unknown, and subsequently tested in the title reaction. For the first time, a chiral amine I and II used as organocatalyst has shown better results than as stoichiometric protonating agent. Application of only 10 mol% of salan I and II allows to obtain the (S)-2-methyl-1-tetralone with high yield and enantiomeric excess up to 75%. The DFT calculations of the structure of the catalyst and its complex with lithium enolate were conducted, which makes it possible to propose a likely reaction mechanism. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5SDS of cas: 76-83-5).
(Chloromethanetriyl)tribenzene (cas: 76-83-5) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.SDS of cas: 76-83-5
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics