An efficient synthetic route to carbocyclic enaminonitriles via Lewis acid catalysed domino-ring-opening-cyclisation (DROC) of donor–acceptor cyclopropanes with malononitrile
Stereospecific Syntheses of Enaminonitriles and β-Enaminoesters via Domino Ring-Opening Cyclization (DROC) of Activated Cyclopropanes with Pronucleophilic Malononitriles
作者:Amrita Saha、Aditya Bhattacharyya、Ranadeep Talukdar、Manas K. Ghorai
DOI:10.1021/acs.joc.7b03033
日期:2018.2.16
been developed via domino ring-opening cyclization (DROC) and DROC/decarboxylative tautomerization of activated cyclopropanes with malononitrile pronucleophiles, respectively. Both of the efficient strategies (yield up to 93%) have been generalized with various donor–acceptor and acceptor cyclopropanes as well as with malononitrile derivatives. The stereospecific variants of the two SN2-type DROC strategies