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- 该合成路线反应步骤少、作简便、成反式目标产物的选择性高。This synthetic route has advantages of brief reaction steps, convenient manipulation and high product selectivity for trans resveratrol.
- Boc-Ab7-Aib-Phe(2-Me)-D-Pro-OBzl脱除两端保护得到线性肽链经过环化得到目标产物cyclo(-Ab7-Aib-Phe(2-Me)-D-Pro-),收率0.8%。Finally, cyclo(-Ab7-Aib-Phe(2-Me)-D-Pro-) is successfully prepared by using liquid phase peptide synthesis with Boc protection.
- 以邻甲基苯酚为原料,与1-氯-2-甲基-2-丁烯反应生成2-甲基-6-(3-甲基-2-丁烯基)苯酚,然后催化氧化得到目标产物2-甲基-6-(3-甲基-2-丁烯基)对苯二醌。2-Methyl-6-(3-methyl-2-butenyl)benzo-1,4-quinone was conveniently synthesized from 2-methyl-6-(3-methyl-2-butenyl)phenol which was prepared from o-cresol with 1-chloro-2-methyl-2-butene . The method is very simple and easy to be performed.
- 在1 atm CO下,反应以二茂铁乙炔和邻碘苯酚(或4-取代的邻碘苯酚)为原料,Pd(PPh_3)_4/CuI作催化剂,K_2CO_3作碱,甲苯为溶剂,在较短的反应时间(90 min)里以较高的产率获得目标产物。Ethynylferrocene and 2-iodophenol are used as the starting materials, Pd(PPh_3)_4/CuI as catalyst, K_2CO_3 as base. The reaction is performed under CO (1 atm) to obtain the objective products in short time and good yield.
- 他的建议成了批评的目标。His proposal became the target of criticism.
- 原子弹是二十世纪物理学的产物。The atomic bomb is the offspring of twentieth century physics.
- 我们的目标是将生产增加一倍。We aim at doubling our production.
- 成员间缺乏坚定不移的目标。There is little unity of purpose among the members.
- 这种分解过程的产物之一是元素氯。One of the products of this breakdown is the element chlorine.
- 我们的目标是消灭贫困。Our goal is to eliminate poverty.
- 时代的产物creature of the age
- 我的人生目标是帮助他人。My goal in life is to help others.
- 铀母体与其衰变产物分离。The parent uranium has been partitioned from its decay products.
- 凝视目标to fix the target
- 葡萄藤的产物products of the vine.
- 注视目标fixation object
- 博爱为文明的产物。Charity is the daughter of civilization.
- 我们的目标是取得最高的效率。Our goal is to achieve the maximum of efficiency.
- 龙是想像的产物。Dragons are the coinage of the brain.
- 他们未必能够达到这一目标。They are not likely to attain this aim.