yields with high regioselectivity from readily available aromatic compounds and aryl/alkyl thiols, even on gramscale. To demonstrate the practicability of this reaction, two bioactive compound skeletons were synthesized in good yields. This method can also be used to late‐stage modification of curcumin.
An iodine‐PPh3 mediated sulfenylation of indoles in water with stable and odorless sodiumsulfinates as the sulfur source is described. The reaction could afford monosulfenylated indoles in moderate to excellent yields under metal free conditions. Moreover, double C—H sulfenylation of indoles at 2‐ and 3‐positions has also been achieved by using excess sodiumsulfinates under the optimized reaction
Copper-catalyzed sulfenylation of pyrroles with disulfides or thiols: directly synthesis of sulfenyl pyrroles
作者:Diego Alves、Renata G. Lara、Maria E. Contreira、Cátia S. Radatz、Luis F.B. Duarte、Gelson Perin
DOI:10.1016/j.tetlet.2012.04.094
日期:2012.6
We present here the synthesis of sulfenyl pyrroles by copper-catalyzed sulfenylation of pyrroles with organic disulfides or thiols. The direct sulfenylation of pyrroles with organic disulfides has been accomplished in the presence of 3 mol % of CuI in DMSO at 110 °C under air atmosphere. In the other hand, sulfenylation of pyrroles with thiols were performed in the same solvent and temperature, however
We herein report the copper-catalyzed C–S bond coupling reaction of indoles with N-thiosuccinimides, resulting in moderate to excellent yields of mono- and bis-sulfenylated compounds such as arylthioindoles, alkylthioindoles, selenylated indoles, and cysteine-substituted indoles. Thioarylation and thioglycosylation at the C2 position of indole alkaloids in the Radix Isatidis were achieved via structural