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.
Asymmetric allylation of sulfonyl imines catalyzed by in situ generated Cu(<scp>ii</scp>) complexes of chiral amino alcohol based Schiff bases
作者:Debashis Ghosh、Prasanta Kumar Bera、Manish Kumar、Sayed H. R. Abdi、Noor-ul H. Khan、Rukhsana I. Kureshy、Hari C. Bajaj
DOI:10.1039/c4ra10929e
日期:——
We have developed a catalytic route for enantioselective synthesis of homoallyl amines through Cu(ii)-Schiff base catalyzed allylation of aryl N-sulfonylimines.
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.