Huang, Chao; Zhu, Kaifang; Zhang, Yingying; Shao, Zhichao; Wang, Dandan; Mi, Liwei; Hou, Hongwei published the artcile< Directed Structural Transformations of Coordination Polymers Supported Single-Site Cu(II) Catalysts To Control the Site Selectivity of C-H Halogenation>, Product Details of C7H7ClO2, the main research area is imidazolediyl bistetrazole manganese copper coordination polymer preparation crystal structure; coordination polymer imidazolediylbistetrazole manganese copper catalyst carbon hydrogen halogenation; crystal mol structure imidazolediyl bistetrazole manganese copper coordination polymer.
A main difficulty in C-H bond functionalization is to undertake the catalyst control accurately where the reaction takes place. In this work, to achieve highly effective and regioselective single-site catalysts, a three-dimensional (3D) rhombus-like framework of {[Mn(Hidbt)DMF]·H2O}n (1) [H3idbt = 5,5′-(1H-imidazole-4,5-diyl)-bis(2H-tetrazole)] containing coordinated DMF mols. was constructed. For the dissolution-recrystallization structural transformation process, attractive structural transformations proceeded from 1 to a new crystalline species formulated as {[Mn3(idbt)2(H2O)2]·3H2O}n (2) with a 3D window-like architecture, and then the Mn ions in 2 could be exchanged with Cu ions through cation exchange in a single-crystal to single-crystal fashion to produce the Cu-exchanged product {[Mn2Cu(idbt)2(H2O)2]·3H2O}n (2a), which had a window-like framework like that of 2. Furthermore, 2 and 2a were used as heterogeneous catalysts for the regioselective C-H halogenation of phenols with N-halosuccinimides (NCS and NBS) to produce the site selective single monohalogenated products. It was found that the catalytic activity and site selectivity of 2a were much higher than those of 2, because the unique structural features of 2a with the uniformly dispersed CuII active centers served as a single-site catalyst with a site-isolated and well-defined platform to promote the C-H halogenation reaction in regiocontrol and guide an orientation that favored the para selectivity during the reaction process.
Inorganic Chemistry published new progress about C-H bond activation. 16766-30-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H7ClO2, Product Details of C7H7ClO2.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics