- Pd(II) catalyzed ortho C-H iodination of phenylcarbamates at room temperature using cyclic hypervalent iodine reagents
-
A novel approach to access ortho iodinated phenols using cyclic hypervalent iodine reagents through palladium(II) catalyzed C-H activation has been developed through weak coordination. The reaction showed excellent regioselectivity, reactivity and good functional group tolerance. A unique mechanism was proposed.
- Sun, Xiuyun,Yao, Xia,Zhang, Chao,Rao, Yu
-
supporting information
p. 10014 - 10017
(2015/06/22)
-
- Room-temperature Pd-catalyzed C-H chlorination by weak coordination: One-pot synthesis of 2-chlorophenols with excellent regioselectivity
-
A room-temperature Pd(ii)-catalyzed regioselective chlorination reaction has been developed for a facile one-pot synthesis of a broad range of 2-chlorophenols. The reaction demonstrates an excellent regioselectivity and reactivity for C-H chlorination. This reaction represents one of the rare examples of mild C-H functionalization at ambient temperature.
- Sun, Xiuyun,Sun, Yonghui,Zhang, Chao,Rao, Yu
-
supporting information
p. 1262 - 1264
(2014/02/14)
-
- A general approach towards catechol and pyrogallol through ruthenium- and palladium-catalyzed C-H hydroxylation by weak coordination
-
An efficient ruthenium(II)- and palladium(II)-catalyzed C-H hydroxylation of aryl carbamates has been developed for the facile synthesis of catechols and pyrogallols. The reaction demonstrates excellent reactivity, regio- and chemoselectivity, good functional group compatibility and high yields. The practicality of this method has been proved by a gram-scale synthesis.
- Yang, Xinglin,Sun, Yonghui,Chen, Zhang,Rao, Yu
-
supporting information
p. 1625 - 1630
(2014/06/09)
-
- Rhodium-catalyzed selective C-H activation/olefination of phenol carbamates
-
Rh(III)-catalyzed ortho C-H activation/olefination of phenol carbamates has been developed. High regioselectivity is observed with a range of phenol carbamates enabling efficient coupling with acrylates and styrenes. This reaction exhibits different react
- Gong, Tian-Jun,Xiao, Bin,Liu, Zhao-Jing,Wan, Jian,Xu, Jun,Luo, Dong-Fen,Fu, Yao,Liu, Lei
-
supporting information; experimental part
p. 3235 - 3237
(2011/08/22)
-
- CHLORINATING CHARACTERISTICS OF THE COMPLEX OF N,N-DIMETHYLDICHLOROMETHYLENEIMINIUM CHLORIDE WITH CHLORINE
-
The chlorinating characteristics of the complex (I) of N,N-dimethyldichloromethyleneiminium chloride with chlorine were studied for the case of its reactions with olefins (1-hexene, cyclohexene, tetrachloroethylene), unsaturated alcohols (allyl alcohol), and phenols (phenol, p-cresol).It was found that the ionic chlorination of the olefins by the complex takes place at high rates and with a high degree of selectivity.With the hydroxy compounds there are parallel reactions, in which the chlorinating characteristics of the complex (I) and the reactivity of the N,N-dimethyldichloromethyleneiminium chloride appear.Chlorination of the phenols by the complex (I) takes place at the ortho position, and this leads to the formation of di(o-chloroacyl) carbonates (with the complex and the phenol in a ratio of 1:2) or o-chloroaryl dimethylcarbamates (with the reagents in a ratio of 1:1).
- Mironova, D. F.,Stetsyuk, G. A.,Kukhar', V. P.
-
p. 2319 - 2323
(2007/10/02)
-