Metal-free hydration of aromatic haloalkynes to α-halomethyl ketones
作者:Min Ye、Yuelu Wen、Huifang Li、Yejuan Fu、Qinghao Wang
DOI:10.1016/j.tetlet.2016.09.088
日期:2016.11
A highly regioselective and efficient metal-free hydration of aromatic haloalkynes to α-halomethyl ketones using cheap tetrafluoroboric acid as catalyst is described. The protocol is conducted under convenient conditions and affords products in good to excellent yields, with broad substrate scope, including a variety of aromatic alkynyl chlorides, alkynyl bromides, and alkynyl iodides.
Abstract A practical synthesis of α-bromo/iodo/chloroketones fromolefins under visible-light irradiation conditions has been developed. In the presence of PhI(OAc)2 as promoter and under ambient conditions, the reactions of styrenes and triiodomethane undergo the transformation smoothly to deliver the corresponding α-iodoketones without additional photocatalyst in good yields under sunlight irradiation
Au(I)‐Catalyzed Hydration of 1‐Iodoalkynes Leading to α‐Iodoketones
作者:Alberto Gómez‐Herrera、Ishfaq Ibni Hashim、Marre Porré、Fady Nahra、Catherine S. J. Cazin
DOI:10.1002/ejoc.202001238
日期:2020.11.22
The Au(I)‐catalyzedhydration of 1‐iodoalkynes is reported, using a gold(I)–NHC catalyst. A variety of α‐iodomethyl ketones are thus accessed in good to excellent yields. Several sequential protocols were also developed, leading to the construction of molecular complexity.
The compound 1,1-dimethyl-3-(4-aminocarbonylphe- nyl)propylamine is a useful starting material for preparing phenethanolamines and their salts, which are useful in potentiating the antineoplastic effects of oncolytic drugs.