One-pot synthesis of methyl 4-amino-2,3,3-trisubstituted-1,1-dioxo-2,3-dihydro-1H-1λ6-isothiazole-5-carboxylates
作者:Alexey V. Dobrydnev、Bohdan V. Vashchenko、Iryna S. Konovalova、Kyrylo O. Bisikalo、Yulian M. Volovenko
DOI:10.1007/s00706-018-2241-8
日期:2018.10
A range of aminonitriles, readily available by Strecker reaction, were forced to react with methyl 2-(chlorosulfonyl) acetate. Methyl 2-[[(cyanoalkyl) amino] sulfonyl] acetates formed on the first stage without isolation were converted to methyl 4-amino-2,3,3-trisubstituted-1,1-dioxo-2,3-dihydro-1H-1 lambda(6) -isothiazole-5-carboxylates via CSIC reaction using Et3N-mediated conditions in poor to high yields. The structure of the target compound was confirmed by X-ray diffraction study.