Base-promoted selective β-fragmentation of homoallylamines
摘要:
A selective beta-fragmentation of homoallylamines with the combination of iodobenzene diacetate, iodine, and sodium acetate is reported. The desired carbon-carbon bond cleavage proceeded via a radical beta-scission pathway under mild conditions with good functional group tolerance. (C) 2010 Elsevier Ltd. All rights reserved.
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.
Assembly of homoallylamine derivatives through iron-catalyzed three-component sulfonamidoallylation reaction
作者:Xiaohui Fan、Hong-Bo Zhu、Hao Lv、Kun Guo、Yong-Hong Guan、Xiao-Meng Cui、Bin An、Yan-Ling Pu
DOI:10.1002/aoc.3334
日期:2015.9
An efficient FeCl3‐catalyzed three‐component reaction between aldehydes, sulfonamides and allylsilanes has been achieved, which provides a convenient, atom‐economic and green way to construct homoallylaminederivatives. In addition, this reaction exhibits excellent syn stereoselectivity with γ‐substituted allylsilanes.
Allylation and highly diastereoselective syn or anti crotylation of N-toluenesulfonylimines using potassium allyl- and crotyltrifluoroborates
作者:Sze-Wan Li、Robert A. Batey
DOI:10.1039/b403759f
日期:——
Air and moisture stable potassium allyl- and crotyltrifluoroborates undergo addition to N-sulfonyl and N-sulfinyl aldimines in the presence of Lewis acids, to provide the corresponding homoallylic amines in high yields and excellent diastereoselectivity.
Imine allylation by allylic trimethylsilanes via in situ formation of N-tosyliminium species from carbonyl compounds and toluene-p-sulfonamide with SnCl2 and N-chlorosuccinimide: regioselection and diastereoselection
作者:Yoshiro Masuyama、Jiro Tosa、Yasuhiko Kurusu
DOI:10.1039/a902789k
日期:——
N-Tosyliminium species, prepared in situ from carbonyl compounds and TsNH2 with SnCl2 and N-chlorosuccinimide, undergo nucleophilic addition of allylic silanes (imine allylation) to produce the corresponding homoallylic amines; the imine allylation by but-2-enyltrimethylsilane with aldehydes and TsNH2 leads to regio- and diastereo-selection to produce anti 1-substituted 2-methylbut-3-enylamines.
Allylic trichlorotins, prepared in situ from α,α-diisopropylhomoallylic alcohols with tin(II) chloride and N-chlorosuccinimide in dichloromethane at -40 °C, cause nucleophilic addition to N-tosylimines or N-tosyliminiums to afford the corresponding α-substituted homoallylic amines.