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Rate constants directly measured from the GC‐analyzed method for SmI2 reduction of ethyl t‐cinnamate and its substituted derivatives in the presence of HMPA and t‐butanol were obtained. HMPA exhibits a stronger catalytic effect than t‐butanol. Dependence of reaction rates on concentration of SmI2 and temperature were studied. Electron‐donating groups retard this reduction; the electron‐withdrawing groups, on the other hand, enhance the reaction rates dramatically.
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Lin et al. (2001) studied this question.
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