ALKYLATION

作品数：243被引量：318H指数：8
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Palladium-catalyzed asymmetric allylic C–H alkylation of 1,4-dienes and glycine Schiff bases被引量：1
《Science China Chemistry》2020年第4期454-459,共6页Tian-Ci Wang Pu-Sheng Wang Liu-Zhu Gong 
Ministry of Science and Technology of China(2015CB856600);the National Natural Science Foundation of China(21672197,21602214);the Chinese Academy of Sciences(XDB20020000).
A highly regio-and enantioselective allylic C–H alkylation of 1,4-dienes with glycine Schiff bases has been established by chiral palladium-phosphoramidite catalysis. This reaction can proceed under mild conditions a...
关键词：ASYMMETRIC catalysis palladium ALLYLIC C–H ALKYLATION 1 4-diene GLYCINE Schiff base 
Synthesized high-silica hierarchical porous ZSM-5 and optimization of its reaction conditions in benzene alkylation with methanol被引量：6
《Chinese Chemical Letters》2019年第3期757-761,共5页Jiayao Rui Jinghui Lyu Hualei Hu Qunfeng Zhang Qingtao Wang Xiaonian Li 
financial support from the National Natural Science Foundation of China(Nos. NSFC-21476207 and NSFC21506189);National Basic Research Program of China (973 Program, No. 2011CB710800)
In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Br(o|¨)nsted acidity and hierarchical porous structure was synthesized by sol-gel method for continuously catalytic conversion of benzen...
关键词：ZSM-5 ETHYLBENZENE XYLENE Optimization BENZENE ALKYLATION 
Selective alkylation and bioactivity of phosphorothioated nucleolin aptamer AS1411被引量：1
《Journal of Chinese Pharmaceutical Sciences》2017年第1期23-30,共8页张光普 邓家荔 杨先桃 朱月洁 关注 张礼和 杨振军 
the Ministry of Science and Technology of China(Grant No.2012CB720604);National Natural Science Foundation of China(Grant No.21332010)
An operationally simple and efficient method for the synthesis of a wide range of alkylated nucleotides under mild conditions was developed. This improved method furnishes alkylated nucleotides fi＇om both single nucl...
关键词：Phosphorothioated nucleotide ALKYLATION APTAMER AS 1411 NUCLEOLIN 
Decarboxylative Alkylation of β-Keto Acids with Isochromans under Oxidative Conditions
《Chinese Journal of Chemistry》2013年第1期37-39,共3页Yan Chen Shi-Kai Tian 
Acknowledgement We are grateful for the financial support from the National Natural Science Foundation of China （21232007 and 21172206）, the National Basic Research Program of China （973 Program 2010CB833300）, and the Program for Changjiang Scholars and Innovative Research Team in University （IRT1189）.
An unprecedented decarboxylative alkylation reaction of fl-keto acids with isochromans has been developed under oxidative conditions. A range of β-keto acids smoothly undergo decarboxylative alkylation with isochroma...
关键词：β-keto acids isochromans 2 2 6 6-tetramethylpiperdine-l-oxoammonium salts DECARBOXYLATION al-kylation 
Ferric chloride-catalyzed decarboxylative alkylation of β-keto acids with benzylic alcohols
《Chinese Science Bulletin》2012年第19期2377-2381,共5页YANG CuiFeng SHEN Chen LI HaiHua TIAN ShiKai 
supported by the National Natural Science Foundation of China (21172206,20972147,and J1030412);the National Basic Research Program of China (2010CB833300);the Program for Changjiang Scholars and Innovative Research Team in University (IRT1189)
β-Keto acids are unstable to heat,acids,and bases,and have rarely been employed as carbon nucleophiles for the formation of carbon-carbon bonds.In this context,an efficient decarboxylative alkylation reaction of β-k...
关键词：烷基化反应 三氯化铁 酮酸 脱羧 苄醇 催化 区域选择性 连续裂解 
Chlorogallate(Ⅲ) ionic liquids: Synthesis, acidity determination and their catalytic performances for isobutane alkylation被引量：3
《Science China Chemistry》2012年第8期1542-1547,共6页XING XueQi ZHAO GuoYing CUI JianZhong 
the financial support from the Beijing Municipal Natural Science Foundation (2122052);Key Program of National Natural Science Foundation of China (21036007);National Basic Research Program of China (2009CB219904)
A series of triethylammonium-based chlorogallate（Ⅲ） ionic liquids with varied Lewis acidity was synthesized, characterized, and firstly applied to isobutane alkylation. The [Et3NHC1]-GaCl3 with XGaCl3 =0.65 display...
关键词：chlorogallate（Ⅲ） acidic ionic liquid Lewis acid ALKYLATION ISOBUTANE 
Highly selective ethylbenzene production through alkylation of dilute ethylene with gas phase-liquid phase benzene and transalkylation feed被引量：11
《Journal of Natural Gas Chemistry》2009年第1期21-24,共4页Shenglin Liu Fucun Chen Sujuan Xie Peng Zeng Xiyan Du Longya Xu 
This work is supported by the National 973 Project of China (2009CB623501)
A novel industrial process was designed for the highly selective production of ethylbenzene. It comprised of a reactor vessel, vapor phase ethylene feed stream, benzene and transalkylation feed stream. Especially the ...
关键词：dilute ethylene gas phase-liquid phase benzene ALKYLATION ETHYLBENZENE 
Acidity effects of Hβ zeolite on olefin alkylation of thiophenic sulfur in gasoline被引量：4
《Journal of Natural Gas Chemistry》2008年第1期45-50,共6页Zekai Zhang Dong Liu Xiangxue Zhu Haiwei Yu Shenglin Liu Longya Xu 
the National 973 Project of China(No.2005CB221403);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant:DICP K2007D3)
Olefin alkylation of thiophenic sulfur process was carried out in model gasoline, using Hβ zeolites with different Si/Al2 ratios as catalysts. In particular, the influence of acid properties of Hβ zeolites on its ca...
关键词：DESULFURIZATION ALKYLATION ACIDITY Hβ GASOLINE 
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