Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Kayaku Co Ltd
Original Assignee
Nippon Kayaku Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kayaku Co LtdfiledCriticalNippon Kayaku Co Ltd
Priority to JP20354187ApriorityCriticalpatent/JPS6447763A/en
Publication of JPS6447763ApublicationCriticalpatent/JPS6447763A/en
PURPOSE:To obtain the titled substance useful as a plant growth regulator, in high yield and purity, by dehydrogenating dichloroindoline acetic acids in the presence of a dehydrogenation catalyst. CONSTITUTION:The objective compound of formula II can be produced by the dehydrogenation reaction of a compound of formula I (R is H or alkyl) in the presence of 2-20mol.% (based on the compound of formula I) of a dehydrogenation catalyst (e.g. Pd/C) in 20-40pts.wt. (based on 1pt.wt. of the compound of formula I) of a solvent (e.g. toluene) at 80-200 deg.C for 0.5-20hr. The reaction is preferably carried out in an atmosphere of an inert gas (e.g. N2 gas).
JP20354187A1987-08-181987-08-18Production of dichloroindoleacetic acid derivative
PendingJPS6447763A
(en)
Process for production of herbicides containing as active substance cyclic internal anhydrid either its free acid form or its salts and process for the production of the activ substances