Design, Synthesis and Evaluation of Novel Trichloromethyl Dichlorophenyl Triazole Derivatives as Potential Safener
作者:Ke-Liang Guo、Li-Xia Zhao、Zi-Wei Wang、Shu-Zhe Rong、Xiao-Lin Zhou、Shuang Gao、Ying Fu、Fei Ye
DOI:10.3390/biom9090438
日期:——
the crop toxicity problem and exploit the novel potential safener for fenoxaprop-P-ethyl herbicide, a series of trichloromethyl dichlorobenzene triazole derivatives were designed and synthesized by the principle of active subunit combination. A total of 21 novel substituted trichloromethyl dichlorobenzene triazole compounds were synthesized by substituted aminophenol and amino alcohol derivatives as
Substituted pyrido[1,2,3,-de]-1,4-benzoxazines as bactericides
申请人:Riker Laboratories, Inc.
公开号:US03984548A1
公开(公告)日:1976-10-05
Anti-microbial agents which are 2,3-dihydro-3-substituted-7-oxo-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxy lic acids are prepared by condensation of benzoxazines with ethoxymethylene malonate esters followed by ring closure with poly phosphoric acid and hydrolysis of the resulting esters.
A facile and versatile synthesis of dihydrobenzoheterocycles via Al(OTf)(3)-mediated cascade cyclization and ionic hydrogenation has been developed. The reaction is applicable to a wide range of substrates with various functional groups to afford the corresponding products in good yields.
Synthesis and Safener Activity of Novel Substituted 4-Phenoxyacetyl-1,4-benzoxazines
A novel class of 3-methy1-4-phenoxyacety1-3,4-dihydro-2H-1,4-benzoxazine 3 were synthesized via reduction, cyclization, and acylation reactions. The structures of the compounds were characterized by IR, H-1-NMR, C-13-NMR, MS, and elemental analyses. The configuration of 3f was determined by X-ray crystallography. The bioassay results demonstrated that most of these compounds could alleviate 2,4-D butylate injury to maize.