Novel and highly efficient synthesis of 3-(alkyl/benzylthio)-9b-hydroxy-1H-imidazo[5,1-a]isoindole-1,5(9bH)-dione derivatives
作者:Azar Jamaleddini、Mohammad Reza Mohammadizadeh
DOI:10.1016/j.tetlet.2016.11.109
日期:2017.1
The oxidation of 3a,8a-dihydroxy-2-(alkyl/benzylthio)indeno[1,2-d]imidazol-8(3H)-ones to give the corresponding 3-(alkyl/benzylthio)-9b-hydroxy-1H-imidazo[5,1-a]isoindole-1,5(9bH)-dione derivatives in good to excellent yields at room temperature using two oxidants, periodic acid in aqueous ethanol and lead(IV) acetate in acetic acid, has been reported.
3a,8a-二羟基-2-(烷基/苄硫基)茚满[1,2 - d ]咪唑-8(3 H)-的氧化,得到相应的3-(烷基/苄硫基)-9b-羟基-1 H-咪唑并[5,1- a ]异吲哚-1,5(9b H)-二酮衍生物在室温下使用两种氧化剂(乙醇水溶液中的高碘酸和乙酸醋酸铅(IV))具有良好的优异产率。被报道。
Access to a Wide Range of Sultams by Cyclodialkylation of α-Substituted Methanesulfonanilides
作者:Valentin A. Rassadin、Daria S. Grosheva、Irina A. Arefeva、Aleksandr A. Tomashevskiy、Victor V. Sokolov、Armin de Meijere
DOI:10.1002/ejoc.201200670
日期:2012.9
3-diaryl-2-thia-3-azabicyclo[3.1.0]hexane 2,2-dioxides in good to excellent yields (51–88 %, 16 examples). The 4-methoxyphenyl (PMP) group was easily removed from the sultam nitrogen atom by treatment of the corresponding bicyclicsultams with cerium(IV) ammonium nitrate in acetonitrile (71–84 % yield, 6 examples).