Organic phosphorous derivatives and manufacturing processes...

Details Organic phosphorous derivatives and manufacturing processes... Organic phosphorous derivatives and manufacturing processes...

C - Chemistry, Metallurgy

07

F

260/458.8

C07F 9/32 (2006.01)

Patent

CA 1339578

Novel methyl-3,3'-dialkoxypropylphosphinic acid derivatives of the formula (I), Image [I] which are useful intermediates for manufacturing herbicidal compounds, were prepared by oxo synthesis of a readily availa~le and inexpensive compound (II). [II] According to amido-carbonylation of the compounds (I), a following compound (V) also userul intermediates ror a herbicidal compound was obtained. Image [V] Accoraing to concurrent amido-carbonylation of tne compounds (II), the compounds (V) and/or following compounds (VI) also useful intermediates ror the herbicidal compound was obtained. [VI] R1 means alkyl, R2 means alkyl or phenyl which may be substituted and X means lower alkyl, halo-lower alkyl or phenyl which may be substituted.

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