Nickel-Catalyzed Asymmetric Hydrogenation of Cyclic Sulfamidate Imines : Efficient Synthesis of Chiral Cyclic Sulfamidates

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

30 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)63-73
Journal / PublicationiScience
Volume19
Online published4 Jul 2019
Publication statusPublished - 27 Sept 2019
Externally publishedYes

Abstract

Chiral cyclic sulfamidates are useful building blocks to construct compounds, such as chiral amines, with important applications. Often these compounds can only be generated through expensive precious metal catalysts. Here, Ni(OAc)2/(S, S)-Ph-BPE-catalyzed highly efficient asymmetric hydrogenation of cyclic sulfamidate imines was successfully developed, affording various chiral cyclic sulfamidates with high yields and excellent enantioselectivities (up to 99% yield, >99% enantiomeric excess [ee]). This Ni-catalyzed asymmetric hydrogenation on a gram scale has been achieved with only 0.1 mol% catalyst loading in 99% yield with 93% ee. Other types of N-sulfonyl ketimines were also hydrogenated well to obtain the corresponding products with >99% conversion, 96%–97% yields, and 97%–>99% ee. In addition, this asymmetric methodology could produce other enantioenriched organic molecules, such as chiral β-fluoroamine, amino ether, and phenylglycinol. Moreover, a reasonable catalytic cycle was provided according to the deuterium-labeling studies, which could reveal a possible mechanism for this Ni-catalyzed asymmetric hydrogenation. Chemistry; Catalysis; Organic Chemistry; Stereochemistry © 2019 The Authors

Research Area(s)

  • Catalysis, Chemistry, Organic Chemistry, Stereochemistry

Citation Format(s)

Nickel-Catalyzed Asymmetric Hydrogenation of Cyclic Sulfamidate Imines: Efficient Synthesis of Chiral Cyclic Sulfamidates. / Liu, Yuanhua; Yi, Zhiyuan; Tan, Xuefeng et al.
In: iScience, Vol. 19, 27.09.2019, p. 63-73.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review