41944-93-8Relevant academic research and scientific papers
A phenoxy carboxylic acid ester herbicide preparation method (by machine translation)
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Paragraph 0094; 0096, (2019/01/08)
The invention provides a phenoxy carboxylic acid ester herbicide preparation method, including: S1, phenol in the presence of alkaline substance with the chlorinated carboxylic acid ester condensation reaction, phenoxy carboxylic acid ester obtained; the ClR states the chloro- carboxylic acid ester of the general formula1 COOR, R1 Is C1 - 3 alkylene or alkylidene, R is C1 - 10 alkyl or C3 - 10 cycloalkyl; S2, the [...] ester in the 1st and 2nd catalyst the presence of a catalyst, with the chlorinating agent to carry out the selective chlorination of, get [...] ester; the Lewis acid catalyst is selected from the 1st, the 2nd catalyst is C5 - 22 of the thioether, thiazole, thiophene compounds or different benzisothiazoles; S3, will the [...] ester with an alcohol reaction, as shown in formula I phenoxy carboxylic acid ester herbicide; R3 Is H, Cl or CH3 , R ' is a C4 - 20 alkyl or cycloalkyl. This invention can improve the product quality and the production environment, three waste low. (by machine translation)
1H NMR SPECTRA OF SOME JUVABIONE ANALOGUES
Mahajan, R. K.,Gupta, Neelam,Uppal, Satinder K.
, p. 690 - 696 (2007/10/02)
A number of aromatic aza-analogues of juvabione and dehydrojuvabione have been synthetized by treatment of substituted benzylamine with 3-methylbutanoyl chloride and 3-methyl-2-butenoyl chloride.Reaction of substituted phenoxyacetyl chlorides with isoprop
