Abstract

AbstractReaction of sulfur dichloride with sym‐EtO2CNHNHCO2Et 1 gives the title ring system which has been characterised by microanalyses, nmr, and X‐Ray crystallography. The X‐ray structure of S2[N(CO2Et)]4 2 reveals that the S2N4 ring adopts a chair conformation with all four ester groups in pseudo‐axial positions. Bond lengths and angles are compared with 1 and S4(NR)2.

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