144171-61-9Relevant articles and documents
A New Method for the Synthesis of Oxadiazine Insecticide Indoxacarb
Xu, Defeng,Guan, Jing,Xu, Xing,Gong, Shunze,Xu, Hui
, p. 1469 - 1473 (2016)
9-Fluorenylmethoxycarbonyl was a good protecting group in the field of chemical industry. In the present paper, a new approach for the synthesis of oxadiazine insecticides indoxacarb used 9-fluorenylmethoxycarbonyl as protected group, and triphosgene for chloroformylation. A convenient synthesis of 9-fluorenylmethoxycarbonylhydrazine can be achieved by the nucleophilic substitution reaction of 9-fluorenylmethyl chloroformate and hydrazine hydrate. 4a-Methyl-2-(9-fluorenylmethyl)-7-chloro-indeno [1,2e][1,3,4]oxadia zine-2,4a (3H,5H)-dicarboxylate can be produced via ketone -hydrazine crosslink reaction and cyclization. A preparation of carbamic acid-(chlorocarbonyl)-[(4-trifluoromethoxy) phenyl] me ester can be obtained by the chloroformylation of triphosgene. Finally, the deprotection of 9-fluorenylmethoxy carbonyl and condensation with carbamic acid-(chlorocarbonyl)-[(4-trifluoromethoxy) phenyl] me ester can afford indoxacarb in good yield. A new method for the synthesis of oxadiazine insecticides indoxacarb used 9-fluorenylmethoxycarbonyl-protected group to produce 9-?fluorenylmethoxycarb?onylhydrazine, then through the ketone–hydrazine crosslink reaction, cyclization, deprotection, chloroformylation, and condensation in good yield.
CRYSTALLINE FORM OF INDOXACARB, PROCESS FOR ITS PREPARATION AND USE THEREOF
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Paragraph 0070, (2018/09/02)
Provides a crystalline form of indoxacarb, the crystal preparation process, the analyses of the crystal through various analytical methods and using the crystal to prepare stable agrochemical formulation. Also provides the use of various solvents towards