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- W2950455712 abstract "Abstract Alkyl- and arylsulfanylation of 1,3-dihydro-2,1-benzisothiazole 2,2-dioxides (benzosultams) 1a–c and pyridosultam 1d with dialkyl and diaryl disulfides provides dithioacetals of 2-aminobenzaldehydes 6–13 . 1,3-Dimethylbenzosultam 19 with disulfides forms 3-alkyl(aryl)sulfanyl-1,3-dimethylbenzosultams 20–22 that undergo thermal extrusion of SO2 followed by a [1,5] sigmatropic hydrogen shift in the intermediate aza-ortho-xylylene leading to 1-arylvinyl sulfides 24–26 . Tandem alkylation–sulfanylation of benzo- and pyridosultams 1a–d with 4-bromobutyl thiocyanate gives tetrahydrothiopyrano-spiro-benzosultams 27–30 that, after extrusion of SO2 and [1,5] hydrogen shift, form 2-aryl-5,6-dihydro-4H-thiopyrans 32–35 . Alkylation of pyridosultam 1d with 3-chloropropyl thiocyanate leads directly to 2-pyrido-3,4-dihydrothiophene derivative 37 ." @default.
- W2950455712 created "2019-06-27" @default.
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- W2950455712 date "2005-09-01" @default.
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- W2950455712 title "Synthesis and reactions of 3-alkylsulfanyl-1,3-dihydro-2,1-benzisothiazole 2,2-dioxides" @default.
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- W2950455712 doi "https://doi.org/10.1016/j.tet.2005.07.015" @default.
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