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- 通过二步反应合成了EC,?K用~(99)Tc~mO_4-标记制得~(99)Tc~m-EC。 EC was synthesized by two-step reactions and labeled with ~(99)TcO_4~-.
- 一步 (single) step
- 二 two
- 通过二氨基硫脲与酮或不同的醛进行分步反应，合成了3种未见报道的不对称双席夫碱。 Three new asymmetric bis-Schiff bases containing thiocarbohydrazide were synthesized by the reaction of thiocarbohydrazide with ketone and different aldehydes step by step.
- 通过 to adopt
- 研究了异戊二烯经与次氯酸加成、乙酸酐酯化和氧化三步反应合成4-乙酰氧基-2-甲基-2-丁烯醛的新工艺,总收率达到65%。 A new process for the synthesis of 4-acetoxy-2-methyl-2-butenal was proposed which involves three steps the addition reaction of isoprene with hypochloric acid, esterification of the additive results with acetic anhydride followed by allyl rearrangement of 1,2-position product, oxidation of the ester obtained to form the target C5-aldehyde, with an overall yield of 65%25.
- 反应 response
- 以雄甾 - 1,4-二烯 - 3,17-二酮为原料 ,经缩酮化、芳构化和水解三步反应合成雌酮 ,并对此工艺进行中试放大 ,总收率可达 5 3.3%。 Estrone was synthesized from andro 1,4 dien 3,17 dione by three steps including ketal formation, aromatization and hydrolysis. The new synthetic method of estrone was verified by amplifying and the overall yield of its amplification was 53.3%25( w/w).
- 另外，以CDC分别与2-氨基吡啶、3-氨基吡啶反应合成了两种新型的纤维素衍生物。 Additionally, two new cellulose derivatives were synthesized by reaction of CDC with 2-aminopyridine and 3-aminopyridine, respectively.
- 基于二步估计器的PID自校正预测控制 PID Self-tuning Predictive Control Based on Two-step Estimator
- 流体通过二维振动翼型的声辐射研究 Research on the sound generation by flow past vibrated aerofoil in two dimensions
- 一步反应 one step reaction
- 采用微波辐射技术,以苯胺、冰乙酸为原料反应合成了乙酰苯胺。 The acetanilide was synthesized under the action of microwave irradiation from phenylamine,glacial acetic acid that acted as raw material.
- 热固定是将空气中乾燥的抹片快速地在本生灯火焰上通过二或三回。 Heat fixation is performed by the rapid passage of the air-dried smear two or three times over the flame of the Bunsen burner.
- 室温固态一步反应法 one-step solid state reaction
- 二步舞 two -step
- 用AFO反应合成了23个多羟基黄酮醇衍生物。 Twenty-three flavonols were synthesized with the AFO reaction.
- 最后基于Deneb/ENVISION ,通过二次开发实现了一个虚拟布局设计原型系统 Finally, a prototype of virtual layout design system based on Deneb/ENVISION is formed.
- 硬脂酸硬蜡混合液及硬蜡二步浸蜡法在石蜡切片中的应用 Application of two-step soaking method in mixure of stearic acid and high melting point ceresin in paraffin section
- 在较复杂的一步反应里，既有化学键的形成，也有化学键的断开。 In a more complex one-step reaction, bonds both form and break.
