| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject new compound consisting of a specific alkyl (diaryl) phosphonoacetate and useful e.g. as a phosphonate reagent giving a Z-α,β-unsaturated ester by Horner-Emmons reaction with an aldehyde. SOLUTION: This new alkyl (diaryl) phosphonoacetate is expressed by the formula I (R<1> is H, a halogen, an alkyl or an alkyloxy; R<2> is methyl or ethyl) and useful e.g. as a phosphonate reagent for synthesizing a Z-α,βunsaturated ester by Horner-Emmons reaction with an aldehyde. The compound can be produced by reacting a trialkyl phosphonoacetate of the formula II, etc., with phosphorus pentachloride, etc., and reacting the resultant alkoxycarbonylmethylphosphonic acid dichloride of the formula III with a phenol.
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