The reactivity of wheat straw soda lignin ( WSSL ) can be improved by demethylation modification.

麦草 碱木素在碱催化下经脱甲基改性可提高其反应活性.

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Benzbromarone was synthesized from salicylaldehyde by condensation with chloroacetone, reduction, acylation, demethylation and bromination overall yield.

以水杨醛为原料,经缩合 、 还原 、 酰化 、 脱甲基、溴化反应制得苯溴马隆,总收率40.6%.

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The synthesis of naloxone was improved and the method for O - demethylation was investigated.

改进了纳洛酮的合成工艺,尤其探讨了去氧甲基的方法.

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