An article Asymmetric Ring-Closing Aminooxygenation of Alkenes en Route to 2-Amino-1,3-Diols with Vicinal Stereocenters WOS:000563755700084 published article about INTRAMOLECULAR AMINOHYDROXYLATION; OXYAMINATION; AZIRIDINATION; RUTHENIUM; OLEFINS in [Tan, Yuqi; Han, Feng; Hemming, Marcel; Wang, Jie; Harms, Klaus; Xie, Xiulan; Meggers, Eric] Philipps Univ Marburg, Fachbereich Chem, D-35043 Marburg, Germany in 2020, Cited 27. The Name is 2,4-Dichlorobenzoic acid. Through research, I have a further understanding and discovery of 50-84-0. Safety of 2,4-Dichlorobenzoic acid
A ring-closing aminooxygenation of alkenes with N-benzoyloxycarbamates occurs with very high diastereoselectivity (typically >20:1 d.r.) and very high enantioselectivity (up to 99% ee). The reaction is catalyzed by a recently developed chiral-at-metal ruthenium complex at catalyst loadings of 0.5-1.0 mol %. The reaction is proposed to proceed through a ruthenium nitrenoid intermediate that depending on the nature of the substrate undergoes either an aminooxygenation (1,2-disubstituted alkenes) or stops at the stage of the aziridination (trisubstituted alkenes), which can then be ring opened with benzoic acid. The resulting chiral cyclic carbamates can be hydrolyzed under basic conditions to provide versatile chiral 2-amino-1,3-diols with vicinal stereocenters.
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Reference:
Chloride – Wikipedia,
,Chlorides – an overview | ScienceDirect Topics