Helvetica chimica acta

Pteridine. Teil LXXXII. Synthese und Reaktivität von Lumazin??7??sulfensäuren

A Heckel, W Pfleiderer

Index: Heckel, Armin; Pfleiderer, Wolfgang Helvetica Chimica Acta, 1986 ,  vol. 69, p. 1095 - 1106

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Citation Number: 15

Abstract

The chemical synthesis of the pteridine-7-sulfenic acids 1% 16 is described (Scheme I). The 1, 2, 3, 4-tetrahydro-1, 3, 6-trimethyl-2, 4-dioxopteridine-7-sulfnic acid (14) was isolated as a stable crystalline solid. Its chemical reactivity was investigated and the physical properties determined. In the solid state, the S-oxide form 14A predominates, but in protic solvents the S-OH tautomer 14 exists most likely. In basic medium, the pteridine-7-sulfenate species is ...