A new route to (±)-erythro-roccellic acid and chaetomellic anhydride C through functional rearrangement, promoted by n-propylamine or CH3ONa/CH3OH, of N-propyl-3-chloro-4-dichloromethyl-3-dodecylpyrrolidin-2-one
作者:Laurent De Buyck、Chiara Danieli、Franco Ghelfi、Ugo M. Pagnoni、Andrew F. Parsons、Mariella Pattarozzi、Fabrizio Roncaglia
DOI:10.1016/j.tet.2005.01.086
日期:2005.3
The rearrangement of a trichloro-pyrrolidin-2-one, prepared by the CuCl–TMEDA catalyzed atom transfer radical cyclization of N-alkyl-N-(3-chloro-2-propenyl)-2,2-dichloromyristamide, with n-propylamine or CH3ONa/CH3OH, is the key step of a new, short and inexpensive route to chaetomellic anhydride C and (±)-erythro-roccellic acid.
由CuCl–TMEDA催化的N-烷基-N-(3-氯-2-丙烯基)-2,2-二氯肉豆蔻酰胺与正丙胺的原子转移自由基环化反应制备的三氯吡咯烷-2-酮重排或CH 3 ONa / CH 3 OH,是一种新的,短而廉价的途径生产链桥蜜三酸酐C和(±)-赤型-rocrocellic酸的关键步骤。