Gallium(III) Chloride-catalyzed Sakurai Reaction of α-Amido Sulfones with Allyltrimethylsilane: Access to Synthesis of 2,6-Disubstituted Piperidine Alkaloid Derivatives
of N-alkoxycarbonylamino sulfones (α-amidosulfones) with allyltrimethylsilane in the presence of gallium(III) chloride (5 mol %) proceeded smoothly to afford the corresponding protected homoallylamines in high yields (82―96%). As an application of this methodology, two-step synthesis of biologically active natural products, 2,6-disubstituted piperidine alkaloid derivatives was carried out.
Indium triflate-catalyzed allylation reactions of N-sulfonyl aldimines or N-alkoxycarbonylamino p-tolylsulfones with allyltrimethylsilane: synthesis of protected homoallylic amines
作者:Ponnaboina Thirupathi、Sung Soo Kim
DOI:10.1016/j.tet.2010.09.038
日期:2010.11
Indium triflate-catalyzed allylation reactions of N-sulfonyl aldimines or N-alkoxyloxycarbonylamino p-tolylsulfone with allyltrimethylsilane have been successfully developed to produce protected homoallylic amines.
Magnesium Bistrifluoromethanesulfonimide Catalysed Three-Component Synthesis of Protected Homoallylic Amines
作者:Hongshe Wang、Weixing Zhao
DOI:10.3184/174751911x13056175312712
日期:2011.5
A one-pot, three-component reaction of an aldehyde, benzyl carbamate and allyltrimethylsilane in the presence of 3 mol% of magnesium bistrifluoromethanesulfonimide at room temperature has been shown to afford the corresponding protectedhomoallylic amine in high yield.
Magnesium Bistrifluoromethanesulfonimide Catalyzed Three-component Synthesis of Protected Homoallylic Amines
作者:Hongshe Wang、June Zeng
DOI:10.5012/bkcs.2011.32.7.2203
日期:2011.7.20
A mild and efficient procedure has been developed for the one-pot, three-component reaction of aldehydes, benzyl carbamate and allyltrimethylsilane in the presence of 3 mol % of magnesium bistrifluoromethanesulfonimide at room temperature to afford the corresponding protectedhomoallylic amines in high yields.
An efficient method for the one-pot synthesis of secondary and tertiary N-homoallylic carbamates using catalytic amount of HBF4 center dot OEt2 is described. The reaction proceeded smoothly to afford the corresponding N-homoallylic carbamates in good to high yields. Operationally simple and easily scalable features make this method more practical over existing methods. Use of HBF4 center dot OEt2 as an acid catalyst also proves the catalytic activity of fluorinated acid catalyst in this important organic transformation. (C) 2014 Elsevier B.V. All rights reserved.