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- W2079891303 abstract "1,3-Dialkyl-4,5-dimethylimidazole-2-thiones 1a, 1b and acyclic N,N,N’,N’-tetramethylthiourea 3 react with sulfuryl dichloride to yield a new type of sulfur ylides, 1,3-dialkyl-4,5-dimethylimidazol-2-ylidenesulfonium dichloromethylides 2a, 2b and bis(dimethylamino)methylenesulfonium dichloromethylide 4, respectively. The reaction of 2a and 4 with acetylacetone results in the formation of thione S-ylides 5 and 6, whereas the reaction with dimethyl(trimethylsilyl)amine leads to the formation of S-dimethylaminothiouronium chlorides 8a, 8b, and 9, respectively. Anion metathesis of 8a, 8b, and 9 with NaX affords compounds 10a – 10c, 11a, and 11b (X = BPh4, BF4). Compounds 8a and 9 are involved in a [3 + 2] cycloaddition reaction when treated with dimethyl acetylenedicarboxylate, resulting in salt-like derivatives of isothiazolines 12 – 15. These new compounds have been characterized by spectrometric and elemental analyses, and the solid-state structure of compound 10a has also been determined by single-crystal ..." @default.
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- W2079891303 date "2005-03-01" @default.
- W2079891303 modified "2023-10-06" @default.
- W2079891303 title "Synthesis and chemical properties of tetraalkyl-substituted thiourea adducts with chlorine" @default.
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- W2079891303 doi "https://doi.org/10.1080/10241220500045879" @default.
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