Organic phosphorus derivatives and manufacturing processes...

Details Organic phosphorus derivatives and manufacturing processes... Organic phosphorus derivatives and manufacturing processes...

C - Chemistry, Metallurgy

07

F

260/458.8

C07F 9/32 (2006.01)

Patent

CA 1339579

Novel methyl-3,3'-dialkoxypropylphosphinic acid derivatives of the formula (I), (see fig.I) which are useful intermediates for manufacturing herbicidal compounds, were prepared by oxo synthesis of a readily available and inexpensive compound (II), (see fig.II) According to amino-carbonylation of the compounds (I), a following compound (V) also useful intermediates for a herbicidal compound was obtained. (see fig.V) According to concurrent amido-carbonylation of the compounds (II), the compounds (V) and/or following compounds (VI) also useful intermediates for the herbicidal compound was obtained. (see fig.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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