Phosphine-catalyzed intramolecular γ-umpolung addition of α-aminoalkylallenic esters: facile synthesis of 3-carbethoxy-2-alkyl-3-pyrrolines
作者:Ian P. Andrews、Brian R. Blank、Ohyun Kwon
DOI:10.1039/c2cc31347b
日期:——
An array of N-tosylated α-aminoalkylallenic esters was prepared and their cyclization under the influence of nucleophilic phosphine catalysts was explored. The α-aminoalkylallenic esters were prepared through aza-BaylisâHillman reactions or novel DABCO-mediated decarboxylative rearrangements of allenylic carbamates. Conversion of these substrates to 3-carbethoxy-2-alkyl-3-pyrrolines was facilitated through Ph3P-catalyzed intramolecular γ-umpolung addition.
[EN] N-HETEROCYCLIC FIVE-MEMBERED RING-CONTAINING CAPSID PROTEIN ASSEMBLY INHIBITOR, PHARMACEUTICAL COMPOSITION THEREOF, AND USE THEREOF<br/>[FR] INHIBITEUR D'ASSEMBLAGE DE PROTÉINES CAPSIDIQUES CONTENANT UN CYCLE À CINQ CHAÎNONS N-HÉTÉROCYCLIQUE, COMPOSITION PHARMACEUTIQUE ET UTILISATION ASSOCIÉES<br/>[ZH] 含有N杂五元环的衣壳蛋白装配抑制剂、其药物组合物和用途