Browsing by Subject "Herz salts"
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Reaction of Herz salts with malononitrile: A general route to (6H-1,2,3-benzodithiazol-6-ylidene)malononitriles
(2002)6-Chloro-1,2,3-benzodithiazolium chlorides 1 (Herz salts) react with malononitrile to afford the highly coloured ylidenes 2 in low to moderate yields. The reaction is general but complex and in the case of the 6-chloro-4 ...