Studies on the Synthesis and Biological Activity of the Derivatives of 4-Hydroxyl-3-acyl (alkoxylcarbonyl)-2H-1,2-benzothiazine-1,1-dioxides

Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (10): 1565.

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Studies on the Synthesis and Biological Activity of the Derivatives of 4-Hydroxyl-3-acyl (alkoxylcarbonyl)-2H-1,2-benzothiazine-1,1-dioxides

ZHAO Guo-Feng, YANG Hua-Zheng, WANG Ling-Xiu

Institute of Elemento-Organic Chemistry Nankai University, Tianjin, 300071

Received:1995-10-29 Online:1996-10-24 Published:1996-10-24

Abstract

Abstract: In this paper 20 new derivatives were synthesized by the reaction of 4-hydroxyl-3-acyl(alkoxylcarbonyl)-2H-1,2-benzothiazine-1,1-dioxides(Ⅱa-c) with aryl isocyanates,phenyl hydrazine,methyl chloroformate and ethylene glycol,and the reaction of compounds Ⅱa-c with aryl isocyanates was studied under the different molar ratios of strong base NaH.Their structures were characterized by ¹H NMR,IRand elementary analysis.The biological tests indicated that the majority showed good herbicidal activity and plant-growth regulating activity.

Key words: Synthesis, 2H-1,2-Benzothiazine-1,1-dioxide, Herbicidal activity, Plant-growth regulating activity

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ZHAO Guo-Feng, YANG Hua-Zheng, WANG Ling-Xiu. Studies on the Synthesis and Biological Activity of the Derivatives of 4-Hydroxyl-3-acyl (alkoxylcarbonyl)-2H-1,2-benzothiazine-1,1-dioxides[J]. Chem. J. Chinese Universities, 1996, 17(10): 1565.

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Studies on the Synthesis and Biological Activity of the Derivatives of 4-Hydroxyl-3-acyl (alkoxylcarbonyl)-2H-1,2-benzothiazine-1,1-dioxides

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