Preparation, X-ray Structure, and Oxidative Reactivity of N-(2-Iodylphenyl)tosylamides and 2-Iodylphenyl Tosylate: Iodylarenes Stabilized by Ortho-Substitution with a Sulfonyl Group
摘要:
New tosyl derivatives of 2-iodylaniline and 2-iodylphenol were prepared by the dimethyldloxirane oxidation of the corresponding 2-iodophenyltosylamides or 2-iodophenyl tosylate and isolated as stable, microcrystalline products. Single-crystal X-ray diffraction analysis of N-(2-iodylphenyl)-N,4-dimethylbenzenesulfonamide revealed pseudocyclic structure formed by intramolecular 1 center dot center dot center dot O interactions between the hypervalent iodine center and the sulfonyl oxygens in the tosyl group. This tosylamide has an excellent solubility in organic solvents and is it potentially useful hypervalent iodine oxidant.
Preparation, X-ray Structure, and Oxidative Reactivity of N-(2-Iodylphenyl)tosylamides and 2-Iodylphenyl Tosylate: Iodylarenes Stabilized by Ortho-Substitution with a Sulfonyl Group
摘要:
New tosyl derivatives of 2-iodylaniline and 2-iodylphenol were prepared by the dimethyldloxirane oxidation of the corresponding 2-iodophenyltosylamides or 2-iodophenyl tosylate and isolated as stable, microcrystalline products. Single-crystal X-ray diffraction analysis of N-(2-iodylphenyl)-N,4-dimethylbenzenesulfonamide revealed pseudocyclic structure formed by intramolecular 1 center dot center dot center dot O interactions between the hypervalent iodine center and the sulfonyl oxygens in the tosyl group. This tosylamide has an excellent solubility in organic solvents and is it potentially useful hypervalent iodine oxidant.
Synthesis of <i>gem</i>-Difluorinated 1,3-Dienes via Synergistic Cu/Pd-Catalyzed Borodifluorovinylation of Alkynes
作者:Wen-Yan Xu、Yu-Jie Li、Tian-Jun Gong、Yao Fu
DOI:10.1021/acs.orglett.2c01875
日期:2022.8.19
(=CF2), which normally act as metabolically stable bioisosteres for carbonyl groups (C═O), are widely applied in agrochemicals and pharmaceuticals and are also used as building blocks in organic synthesis. Herein, an example of Cu/Pd-catalyzed borodifluorovinylation was achieved using alkynes, difluoroethylene bromide, and B2pin2 as chemical feedstocks, providing the corresponding conjugated gem-difluoroalkene