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ADVANCED SYNTHESIS & CATALYSIS · 2017 ·Vol. 359 ·期 5 ·841-847 · IF 5.646

Iron(III) Chloride-Mediated Regio- and Stereoselective Chlorosulfonylation of Alkynes and Alkenes with Sodium Sulfinates

Kui Zeng,Lang Chen,Yi Chen,Yongping Liu,Yongbo Zhou,Chak-Tong Au,Shuang-Feng Yin

The atom-economic and one-pot regio- and stereoselective addition of sodium arenesulfinates to either alkynes or alkenes can be achieved with an iron(III) chloride hexahydrate [FeCl 3 ⋅6 H 2 O] catalytic system to afford β-haloalkenyl and β-chloroalkyl sulfones in moderate to good yields.

研究领域: 有机化学 · 合成化学 · 药物化学 · 催化化学 · 分子化学

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TETRAHEDRON-ASYMMETRY · 2010 · IF 2.625

Organocatalytic asymmetric Mannich-type reaction of N-sulfonylimines with isocyanoacetate leading to optically active 2-imidazoline-4-carboxylates

Zhen-Wei Zhang,Gui Lu,Miao-Miao Chen,Ning Lin,Yong-Bo Li,Tamio Hayashi,Albert S.C. Chan

The first asymmetric Mannich-type reaction of methyl isocyanoacetate with N -sulfonylimines catalyzed by cinchona alkaloid derivatives yielded 2-imidazolines with high diastereoselectivities and good enantioselectivities (up to >99:1 dr and 70% ee). This reaction provided a convenient route to access various substituted 2-imidazoline-4-carboxylates and related α,β-diamino acids in high enantiomeric purities.

研究领域: 有机化学 · 药物化学 · 不对称合成 · 催化化学 · 生物有机化学

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Iron(III) Chloride-Mediated Regio- and Stereoselective Chlorosulfonylation of Alkynes and Alkenes with Sodium Sulfinates

Organocatalytic asymmetric Mannich-type reaction of N-sulfonylimines with isocyanoacetate leading to optically active 2-imidazoline-4-carboxylates