Lan Zhi-li

East China Normal University

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Fengyi Li

Shanghai University of Medicine and Health Sciences

Dulin Yin

Hunan Normal University

Yujuan Xin

Hunan Normal University

Jiong Sun

Hunan Haili Chemical Industry (China)

Li Ming

Fangcai Yu

Hunan Normal University

Yanling Shi

East China Normal University

Qing Liu

Shandong University of Technology

Jing Li

Shanghai University

Yu‐Dong Yang

The University of Texas at Austin

Cooperative Institutions

Hunan Haili Chemical Industry (China)

Hunan Normal University

East China Normal University

Tsinghua University

National University of Defense Technology

Central South University

Shanghai Jiao Tong University

Nanjing University of Posts and Telecommunications

Zhengzhou University

Shandong University of Technology

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Synthesis of O-Nitrobenzyl Bromide

Lan Zhi-li

A new method of preparation o-nitrobenzyl bromide using o-nitrotoluene as raw material, NaBrO3/NaHSO3 as bromination agent and AIBN as initiator was developed,under the optimum conditions n(o-nitrotoluene) ∶ n(sodium bromate) ∶ n(sodium bisulfite)=1 ∶ 4 ∶ 4,reaction terperature 70 ℃,reaction time 2 h,the yield is up to 73%. This process is easy to scale up with lower material cost,simple and convenient operation.

Sodium bisulfite

Sodium bromide

Bromate

Bisulfite

Reaction conditions

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Synthesis of Ethyl 3-Bromo-1-(3-chloro-2-pyridinyl)-4,5-dihydro-1H-pyrazole-5-carboxylate

Fine Chemical Intermediates (2007)

Lan Zhi-li

Ethyl 3-bromo-1-(3-chloro-2-pyridinyl)-4,5-dihydro-1H-pyrazole-5-carboxylate is an important intermediate of a new insecticide chlorantraniliprole. It was synthesized from ethyl 2-(3-chloro-2-pyridinyl)-5-oxo-3-pyrazolidinecarboxylate through esterification and bromination. The total yield and purity of the product was 91.0% and 99% respectively,indicating that this was a promising industrialization route because of its simply synthetic process and low cost

Pyrazole

Carboxylate

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Study on Hydrosilylation of Acetylene with Methyldichlorosilane III Mechanism of Gas phase Hydrosilylation over PtO 2/Al 2O 3

JOURNAL OF MOLECULAR CATALYSIS (CHINA) (1998)

Lan Zhi-li Fengyi Li

The relative activities of PtO 2/Al 2O 3, Rh 2O 3/Al 2O 3 and PdO/Al 2O 3 were examined for hydrosilylation of acetylene with methyldichlorosilane. The effect of different inorganic supports on the hydrosilylation was investigated. The experimental results indicated that the relative activities are PtO 2/Al 2O 3Rh 2O 3/Al 2O 3 PdO/Al 2O 3, and γ alumina is an effective support. The mechanism of gas phase hydrosilylation over PtO 2/Al 2O 3 was studied with TPR and other methods. The results showed that, there are two types of active sites which have different stabilities over PtO 2/Al 2O 3, the active species is platinum cation and not metallic platinum, the platinum cation is reduced to metallic platinum and caused the deactivation of PtO 2/Al 2O 3 catalyst.

Hydrosilylation

Acetylene

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Substituent Effects on Asymmetric Reduction of Acetophenone Derivatives Induced by β-Cyclodextrin

Journal of Molecular Catalysis(China) (2009)

Lan Zhi-li

Effects of substutuent groups in the presence of β-cyclodextrin on asymmetric reduction of acetophenone derivatives have been studied.The results indicated that substituent groups and low reaction temperature improved enantioselectivity for this asymmetric reaction.Absolute configuration of the resulting alcohols are depending upon the positions of substutuent groups,preponderant absolute configuration of acetophenone and its meta-and para-derivatives was the S while the prevailing absolute configuration was the R in the case of the orth-derivatives.Effects of enantioselectivity of substituted acetophenones were due to the combination of bulkiness of substituent groups,hydrogen bonding,space steric and so on.In addition,preferential orientations of the substrate included inside the β-cyclodextrin are suggested from above results.

Acetophenone

Absolute Configuration

Asymmetric induction

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三次元電極触媒を用いる2-ジエチルアミノ-6-メチル-4-ヒドロキシピリミジンの処理に及ぼす粒子電極合成条件の影響

Huagong Jinzhan (2013)

Li Ming Yin Jie Yong Meng Zhong Wenzhou Lan Zhi-li

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Study on the Synthesis of 5-(1-methylthio)ethyl-2-(trifluoromethyl)pyridine

Agrochemicals Research & Application (2011)

Lan Zhi-li

5-(1-methylthio)ethyl-2-(trifluoromethyl)pyridine(3)was synthesized from 1-(3-methylthiobut-1-phenyl)pyrrolidine(1)and 4-ethoxy-1,1,1-trifluoro-but-3-en-2-one(2)in the protection of nitrogen and presence of ammonium formate. The yield of the reaction was about 63.5% with the purity of 98.6%. The effect of the reaction conditions on reaction yield was investigated,and the optimal conditions were as follows:the material ratio of n(1-(3-methylthiobut-1-phenyl)pyrrolidine)∶n(4-ethoxy-1,1,1-trifluoro-but-3-en-2-one)∶ n(ammonium bicarbonate)=0.9∶1.0∶2.2,reaction solvent was acetonitrile,the solvent amount was 250 mL/mol,calefactive reaction temperature was 75 ℃,total reaction time was 4.5 hours.

Pyrrolidine

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Acetalization of Crotonaldehyde and Glycol to Acetal Catalyzed by Tetraorganodistannoxane

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION) (2001)

Lan Zhi-li

Crotonaldehyde

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Study on TPR of the Catalysts for Biomass Glycerol to Hydroxy-acetone

Guangzhou Chemical Industry (2008)

Lan Zhi-li

TPR technology was used to characterize these copper chromium catalysts.The effects of the ratio of copper and chromium, baking temperature, heating rate, hydrogen content on the TPR graph were studied, in order to find out the best reduction temperature and appropriate preparing condition.

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Thermal Transient Measurement and Dimension-dependent Modeling of Self-heated Advanced Devices

2022 7th International Conference on Integrated Circuits and Microsystems (ICICM) (2021)

Lan Zhi-li Renhua Liu Xiaojin Li Yabin Sun Yanling Shi

In the era of 3D device, the self-heating effect brings higher temperature to device, and significantly affects the electrical performance of device. Accurate thermal modeling is required to optimize the device structure and circuit design. In this paper, a fifth-order thermal RC network is developed to describe the transient heating process based on the transient thermal simulation of 14-nm FinFET technology. Moreover, a size-dependent dynamic thermal model including fin width, fin height, extension length and materials of the source and drain extension regions, and the thickness of the shallow trench isolation (STI) is developed to estimate the peak temperature at given frequency. The parameters are randomly selected to verify the proposed models, and the average mean relative error of the dimension-dependent model is about 0.42 %, the root mean square error is about 2.33 K.

Transient (computer programming)

Transient analysis

10.1109/icicm54364.2021.9660292

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Application of Bifunctional (Thio)ureas with Auxiliary in Asymmetric Organocatalysis

Chinese Journal of Organic Chemistry (2016)

Xuewei Chen Yujuan Xin Qing Liu Lan Zhi-li

（硫）脲、亲核活化基与辅助基构成的手性双功能（硫）脲催化剂,具有易于调控的结构和优异的催化性能,因而,双功能（硫）脲催化成为目前不对称有机催化的一个重要研究领域.各类活化基的引入显著影响了该类催化剂的催化性能,成为催化剂设计的主要考虑方向,获得了广泛关注.此外,合适辅助基的引入也可调控与优化催化性能,成为催化剂设计的一个重要补充方法.然而,到目前为止尚没有利用辅助基策略构建双功能（硫）脲催化剂的系统的综述.从非手性辅助基与手性辅助基角度综述了双功能（硫）脲催化剂的设计与构建以及这些催化剂在系列不对称有机催化研究中的应用,阐述了辅助基结构中的位阻、手性环境、电子效应、氢键给体等因素对催化性能的影响作用,并对其今后的发展进行了展望.

Thio-

10.6023/cjoc201508029

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