Synthese und Reaktionen von 2‐[Bis‐(alkylthio)‐methyliden]‐indan‐1,3‐dionen

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Abstract
Synthesis and Reactions of 2‐[Bis‐(alkylthio)‐methyliden]‐indan‐1,3‐dionesThe 2‐[bis‐(alkylthio)‐methyliden]‐indan‐1,3‐diones 3 and especially the methyl‐compound 3a react with nucleophiles by substitution of the CH3Sgroup. The reaction with amines are yields the S,N or N,N‐acetales 7 and 8, respectively. Diamines, amino hydroxy‐ or amino‐mercapto compounds as dinucleophiles give the cyclic compounds 9 or the condensed heterocycles 12 and 16, where the carbonyl group has been integrated in the cyclisation. Also carbanions react with 3a under substitution. The structures of the final products are determined with ir‐, 1H‐n.m.r.‐ and ms‐spectra.