The reaction of 2-methylthio- or 2-phenylthioarylimines with di-iso-propyl peroxydicarbonate (DPDC) is described. The phenylthio-derivatives undergo cyclization to benzothiazoles via a free-radical mechanism, whereas the methylthio-analogs afford arylthiomethyl iso-propyl carbonates, together with benzothiazoles as well; this last result could be accounted for with the intervention of non-radical mechanism
Reactivity of Woollins' Reagent toward 2‐En‐1‐imines (Schiff Bases): A Facile Approach to Synthesize New Selenium‐Phosphorus‐Nitrogen Heterocycles
作者:Guoxiong Hua、David B. Cordes、Alexandra M. Z. Slawin、J. Derek Woollins
DOI:10.1002/ejic.201901030
日期:2019.11.24
Woollins' Reagent serves as a reductive cycloaddition reagent, reacting with 2‐en‐1‐imines containing a conjugated C=C bond group (Schiff bases) leading to a series of four‐, five‐, six‐membered 1,2‐azaphospholidines incorporating one or two N–P=Se linkages. Ten single‐crystal X‐ray structures confirming the formation of these small N–P–Se heterocycles are reported.