Titanium-Mediated Addition of Grignard Reagents to Acyl Cyanohydrins: Aminocyclopropane versus 1,4-Diketone Formation
作者:Paul Setzer、Gwénaël Forcher、Fabien Boeda、Morwenna S. M. Pearson-Long、Philippe Bertus
DOI:10.1002/ejoc.201301251
日期:2014.1
The 1,2-dianion reactivity of the reagent generated from EtMgBr and titanium isopropoxide was illustrated when N-acyl cyanohydrins were used as substrates (>20 examples), giving both aminocyclopropane derivatives and 1,4-dicarbonyl compounds. When the reaction was performed in diethyl ether, 5-hydroxy-1,4-diketones were the main product. Under specific conditions (use of tetrahydrofuran and a bulky
Cyanomethyl Esters: Useful Protection for Carboxylic Acids
作者:Helmut M. Hugel、K. Vijaya Bhaskai、Robert W. Longmore
DOI:10.1080/00397919208019271
日期:1992.3
Abstract The alkylation of carboxylate salts with chloroacetonitrile yields cyanomethyl esters. Deprotection of the carboxyl group is most readily performed by stirring with an aqueous solution of sodium sulfide.
[EN] LONG CHAIN CARBON AND CYCLIC AMINO ACIDS SUBSTRATES FOR GENETIC CODE REPROGRAMMING<br/>[FR] DÉVELOPPEMENT DES SUBSTRATS CHIMIQUES DE REPROGRAMMATION DE CODE GÉNÉTIQUE POUR QU'ILS COMPRENNENT DU CARBONE À LONGUE CHAÎNE ET DES ACIDES AMINÉS CYCLIQUES