Aerobic Oxidative Cyclization of 2-Mercaptobenzamide to 1,2-Benzoisothiazolin-3-one in the Presence of Mn(OAc)2

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2023-05-23 DOI:10.1134/S2070050423010087

Xuchen Shang, Pan He, Yingchao Dou, Bo Yang, Guanyu Yang

引用次数: 0

Abstract

One of a widely used broad-spectrum industrial bactericidal and mildew prevention agents is 1,2-benzoisothiazolin-3-one (BIT). In present study, it was demonstrated that aerobic oxidative cyclization of 2‑mercaptobenzamide (MBA) and 2,2'-disulfanediyldibenzamide (DSBA) in the presence of Mn(OAc)₂ as catalyst allowed to obtain BIT. The mechanism reaction was suggested. It was found that DSBA and MBA can be converted to the BITwith 99% yield at 1.0 mol % Mn(OAc)₂ under 0.3 MPa of oxygen and 100°C for 8 h. Experimental data point that this protocol is both economical and environmentally friendly.

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在Mn(OAc)2存在下2-巯基苯甲酰胺有氧氧化环化制1,2-苯并异噻唑啉-3- 1

1,2-苯并异噻唑啉-3- 1 (BIT)是一种广泛使用的广谱工业杀菌防霉剂。本研究证明，在Mn(OAc)2的存在下，2 -巯基苯甲酰胺(MBA)和2,2'-二磺基二苯甲酰胺(DSBA)的有氧氧化环化反应可以得到BIT。提出了反应机理。结果表明，DSBA和MBA在1.0 mol % Mn(OAc)2的条件下，在0.3 MPa的氧气和100℃条件下，反应8 h，转化率达到99%。实验数据表明，该工艺既经济又环保。

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.