Azulenopentathiepin (II) obtained by reaction of azulene (I) with elemental sulfur undergoes reactions with different electrophiles to afford the corresponding azulene derivatives via intermediate bisthiolate. Furthermore, desulfuration of (II) and subsequent conversion with dimethyl acetylenedicarboxylate (IX) gives dithiane (X). Treatment with palladium reagent (XI) gives a mixture of regioisomers including the mono Pd-complex (XII) and dinuclear complexes (XIII) and (XIV) which can not be separated. -(SATO*, O.; SAKAI, A.; AOKI, M.; KURAMOCHI, T.; NAKAYAMA, J.; Heterocycles 86 (2012) 2, 1253-1260, http://dx.doi.org/10.3987/com-12-s(n)80 ; Dep. Chem., Grad. Sch. Sci. Eng., Saitama Univ., Sakura, Saitama 338, Japan; Eng.) -M. Bohle 18-044
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