A new route to functionalised π-allyltricarbonyliron lactam complexes from aziridines and their use in stereoselective synthesis and oxidative conversion to β-lactams
A new route to functionalised π-allyltricarbonyliron lactam complexes from aziridines and their use in stereoselective synthesis and oxidative conversion to β-lactams
Regiospecific reductive ring cleavage of N-substituted aziridine-2-carboxylates and an aziridine-2-methanol via catalytic hydrogenation using Pd as a catalyst
作者:Yeonhwa Lim、Won Koo Lee
DOI:10.1016/0040-4039(95)01814-x
日期:1995.11
Regiospecific reductive ringcleavage was accomplished in the reaction of N-α-methylbenzyl substituted aziridine-2-carboxylate and aziridine-2-methanol under a catalytic hydrogenation condition. The regiospecificity was determined by the substituent at C-2.
N -α-甲基苄基取代的氮丙啶-2-羧酸酯和氮丙啶-2-甲醇在催化氢化条件下的反应完成了区域特异性还原环的裂解。区域特异性由C-2上的取代基确定。
A synthesis of aziridines from α-iodoenones
作者:M.Teresa Barros、Christopher D. Maycock、M.Rita Ventura
DOI:10.1016/s0040-4039(02)00791-8
日期:2002.6
α-iodocycloenones in very good yield, by a Michael addition/cyclisation (Gabriel–Cromwell) process employing a slight excess of primaryamine and Cs2CO3 as base at 95°C. Using chiralamines it was possible to prepare optically pure aziridines. The same method was also efficient for the synthesis of aziridines from acyclic α-halounsaturated compounds. 2-Oxoazabicycles reacted with several nucleophiles to afford
通过迈克尔加成/环化(Gabriel-Cromwell)工艺,在95℃下使用略有过量的伯胺和Cs 2 CO 3作为碱,由α-碘代环烯酮以很高的收率制备了氮丙啶。使用手性胺可以制备光学纯的氮丙啶。同样的方法对于由无环α-卤代饱和化合物合成氮丙啶也是有效的。2-氧氮杂双环与几种亲核试剂反应以优异的产率提供了α-杂原子取代的环状烯酮。
A new route to functionalised π-allyltricarbonyliron lactam complexes from aziridines and their use in stereoselective synthesis and oxidative conversion to β-lactams
作者:Steven V. Ley、Ben Middleton
DOI:10.1039/a806236f
日期:——
Aziridinyl enones can be converted in good yield into Ï-allyltricarbonyliron lactam complexes bearing ketone functionality in the side chain; addition of a variety of nucleophiles into the side chains of these complexes proceeds in good yield and excellent (>95%) de to afford secondary and tertiary alcohols which on treatment with trimethylamine N-oxide form the corresponding β-lactams in good yield.