Product Details of 119639-24-6. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-(tert-Butyl)isothiazol-3(2H)-one 1,1-dioxide, is researched, Molecular C7H11NO3S, CAS is 119639-24-6, about Tilcotil studies. Part 2. [4 + 2] Additions with isothiazol-3(2H)-one 1,1-dioxide.
The isothiazoles I (R = CMe3, CH2CO2Et, R1 = Br) are not only dipolarophiles but also reactive and versatile dienophiles, especially with oxy-substituted 1,3-butadienes, I readily combine in Diels-Alder fashion; the regiospecificity of the addition is governed by the carbonyl group of the dienophile, whereas the SO2 group can be ignored for the purpose of predicting regioselectivity. Upon dehydrobromination of the [4 + 2] adducts with DBN, the cycloaromatization process is completed, generating saccharin-like compounds Besides the parent saccharin, several hydroxylated derivatives, e.g., II (R2 = OH, R3 = H; R2 = R3 = OH) have been synthesized by this new method. II are of potential interest as non-nutritive sweetening agents. In an alternative version of this principle, the isothiazole I (R = CMe3, CH2CO2Et, CH2C6H4OMe-4, R1 = H) is reacted with the oxazole III, affording, after acid-promoted rearrangement, pyrido-annulated isothiazoles IV. Since both processes generate saccharin-related structures, they may serve in syntheses of oxicams and analogs of ipsapirone. To demonstrate the viability of the approach one representative of each series, has been converted to an oxicam.
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Reference:
Isothiazole – Wikipedia,
Isothiazole – ScienceDirect.com