Under optimum synthetic condition, the yield of propyl ester was 93.5%.

在最佳反应条件下，尼泊金丙酯的产率为93.5%。

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Under this conditions, the yield of ethyl esters was 85%, propyl ester 94% and butyl ester 92%.

上述条件下，尼泊金乙酯的产率为85% ，尼泊金丙酯的产率为94 % ，尼泊金丁酯的产率为92 %。

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Under this conditions, the yield of ethyl ester, propyl ester and butyl ester respectively is 87.5%, 89.2% and 91.1%.

上述条件下，尼泊金乙酯的产率为87.5% ，尼泊金丙酯的产率为89.2 % ，尼泊金丁酯的产率为91 .1 %。

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