Five resonance-stabilized bisphosphoranes were prepared for the object of the future work. Preliminary examination was carried out in order to make clear the reactivity of the resonance-stabilized bisphosphoranes with the six aromatic monoaldehydes by the Wittig reaction. An unexpected ester exchange reaction of ethyleneglycol bischloroacetate (1) was discussed in the case of 9, 6-dioxa-2, 7-dioxoheptane-1, 8-bistriphenylphosphonium ...
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