The target molecule was synthesized through using chiral reagent, reduction of double bond, hydrogenolysis and hydrolysis of ester group.

之后，经引入手性试剂，双键还原，氢解，水解酯基得到目标产物的合成路线。

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A coal mining method with a combination of a slicing and caving, a double benefit in control of water conducted crack zone development and in reduction of coal production cost can be obtained.

对厚煤层采用分层与放顶煤相结合的采煤方法，既可控制导水裂缝带的发育高度，又可降低生产成本。

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Cast hopper. The double layer design, noise reduction;

投料斗双层设计，减少噪音；

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The second is the reduction in chatter about potential deflation and a double-dip recession.

FORBES: Bullish Sentiment Soars

On the other hand, a drastic, immediate deficit reduction could stymie short-term economic growth and lead to a double-dip recession.

FORBES: Austerity And Bankruptcy Not The Only Fiscal Cliff Endgames

In that case, the double dip fear could continue hanging over the market, preventing the reduction in risk premium assumed in our non-recession scenario.

FORBES: Odds Favor High-Yield Bonds