MESITYL, ALCOXY ET ARYLOXY STIBANES; 1,3-DIOXA-BENZO-2-STIBOLANES
摘要:
Various mesityl, alkoxy and aryloxy-stibanes were prepared from the corresponding mesitylchlorostibanes. The reaction of the same mesitylchlorostibanes with the 3,5-di-t-butyl catechol first leads to the formation of a Sb V complex observed by LH NMR. Depending on the experimental conditions the reaction can fork from this intermediate. Intramolecular hydrochloride elimination when this is trapped using a tertiary amine, leads to 2-mesityl- 1,3-dioxa-4,6-di-t-butylbenzo-2-stibolane while the absence of a tertiary amine allows an acidic cleavage of the mesityl-antimony bond with formation of 2-chloro-1,3-dioxa-4,6-di-t-butylbenzo-2-stibolane.
Design, Synthesis, and Structural Characterization of a Bisantimony(III) Compound for Anion Binding and the Density Functional Theory Evaluation of Halide Binding through Antimony Secondary Bonding Interactions
作者:Jinchun Qiu、Daniel K. Unruh、Anthony F. Cozzolino
DOI:10.1021/acs.jpca.6b08170
日期:2016.11.23
proximity to a halide anion. The study was extended to a structurally related class of 1,3,2-benzodioxastibole derivatives to elucidate their potential for bindinghalide ions. Multiple geometric conformations were evaluated and various ratios of halide anions were considered. According to the computation results, this class of anion receptors shows strong affinities toward charge-dense halides. These 1
Various mesityl, alkoxy and aryloxy-stibanes were prepared from the corresponding mesitylchlorostibanes. The reaction of the same mesitylchlorostibanes with the 3,5-di-t-butyl catechol first leads to the formation of a Sb V complex observed by LH NMR. Depending on the experimental conditions the reaction can fork from this intermediate. Intramolecular hydrochloride elimination when this is trapped using a tertiary amine, leads to 2-mesityl- 1,3-dioxa-4,6-di-t-butylbenzo-2-stibolane while the absence of a tertiary amine allows an acidic cleavage of the mesityl-antimony bond with formation of 2-chloro-1,3-dioxa-4,6-di-t-butylbenzo-2-stibolane.