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.
Iodine‐Mediated Synthesis of Aromatic Thioethers with Aromatic Amines and Sulfonyl Hydrazides in High Regioselectivity
<i>via</i>
C(
<i>sp</i>
<sup>2</sup>
)H Bond Functionalization
作者:Xiaobo Pang、Likui Xiang、Xiaodong Yang、Rulong Yan
DOI:10.1002/adsc.201500943
日期:2016.1.21
An iodine‐mediated synthesis of aromatic thioethers from aromatic amines and sulfonyl hydrazides via C(sp2)Hbondfunctionalization and CS bond formation has been developed. In this procedure, various substituents on the sulfonyl hydrazides, such as alkyl, methoxyl, chloro, bromo and fluoro groups, and aromatic amines are tolerated in the thiolation which generates the desired products in moderate
DMSO/iodine-catalyzed oxidative C–Se/C–S bond formation: a regioselective synthesis of unsymmetrical chalcogenides with nitrogen- or oxygen-containing arenes
作者:Sumbal Saba、Jamal Rafique、Antonio L. Braga
DOI:10.1039/c5cy01503k
日期:——
greener protocol to access different types of unsymmetrical chalcogenides with nitrogen- or oxygen-containing arenes through oxidative C–Se/C–S formation via direct C(sp2)–H bond activation was developed. The products were obtained in good to excellent yields using [O or N]-containing arenes, half equiv. of various odorless diorganyl dichalcogenides (S/Se), iodine (20 mol%) as the catalyst and 3 equiv