A method of performing a chemical reaction includes reacting an allyl donor and a substrate in a reaction mixture, and forming a homoallylic alcohol in the reaction mixture. The substrate may be an aldehyde or a hemiacetal. The reaction mixture includes a ruthenium catalyst, carbon monoxide at a level of at least 1 equivalent relative to the substrate, and water at a level of at least 1 equivalent relative to the substrate, and an amine at a level of from 0 to 0.5 equivalent relative to the substrate. The reaction mixture may also include a halide, and the equivalents of the amine may be similar to those of the halide. The reacting includes maintaining the reaction mixture at a temperature of at least 40° C. The method may be catalytic in metal, environmentally benign, amenable to large-scale applications, and applicable to a wide range of substrates.
Convergent paired electrolysis for zinc-mediated diastereoselective cinnamylation of α-amino esters
作者:Hahyoun Park、Minjun Kim、Jungtaek Kang、Hyunjoon Song、Hyunwoo Kim
DOI:10.1039/d3cc01197f
日期:——
A paired electrochemical method is presented for the one-pot synthesis of γ,δ-unsaturated α-amino esters. The method involves the in situ generation of organozinc reagents through zinc chloride reduction on the nickel cathode and the TEMPO-mediated oxidation of amino esters on the carbon anode. The presence of an ester moiety in the amine substrate was found to be crucial for achieving high diastereoselectivity
提出了一种用于一锅法合成 γ,δ-不饱和 α-氨基酯的配对电化学方法。该方法涉及通过在镍阴极上还原氯化锌和在碳阳极上对氨基酯进行 TEMPO 介导的氧化来原位生成有机锌试剂。发现胺底物中酯部分的存在对于实现高非对映选择性至关重要。
Fluoride ion induced reactions of organosilanes with electrophiles
作者:Alfredo Ricci、Alessandro Degl'innocenti、Mariella Fiorenza、Maurizio Taddei、Maria A. Spartera、David R.M. Walton
DOI:10.1016/s0040-4039(00)86894-x
日期:1982.1
Zinc-promoted reactions. 8. The effect of ring strain in the reduction of 1,2-dibenzoylcycloalkanes
作者:Maria Luisa di Vona、Luciana Luchetti、Vittorio Rosnati