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A Simple primary amine Derived from Cyclohexanediamine Catalyst for Asymmetric Direct Aldol Reaction

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A Simple Primary Amine Derived from Cyclohexanediamine Catal...

Microwave-enhanced Mannich Condensation of Terminal Alkynes, primary amines with Paraformaldehyde on Cuprous Iodide Doped Alumina under Solvent Free Conditions

有机合成创新—产业化的新动力——中国化学会全国第三届有机合成化学与过程学术讨论会

作者： Chen,Guodong Li,Chao Fu,Xiangkai~* (College of Chemistry and Chemical Engineering,Research Institute of Applied Chemistry Southwest University The Key Laboratory of Applied Chemistry of Chongqing Municipality,Chongqing 400715)

The aldol reaction,which is used in nature for building of carbohydrate molecules through the use of aldolase enzymes,is recognized as one of the most efficient methods for the formation of carbon-carbon bonds in organic Synthesis Since the first reports on the asymmetric direct aldol reactions catalyzed by L-proline,many organocatalysts have been synthesized with the aim of increasing their reactivity and *** group recently reported the 4-phenoxy substituted and 4-tertbutyldimethylsiloxy-substituted prolinamides catalyze the

关键词： primary amine cyclohexanediamine aldol reaction asymmetric catalysis

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Chinese Journal of Chemistry 2003年第6期21卷 710-713页

作者：王磊李品华 Department of Chemistry Huaibei Coal Teachers College Huaibei Anhui 235000 China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China Department of Chemistry Huaibei Coal Teachers College Huaibei Anhui 235000 China

A microwave enhanced, solventless Mannich condensation of terminal alkynes, primary amines with paraformaldehyde on cuprous iodide doped alumina has been investigated. The structures of products depend on the ratio o... 详细信息

关键词： Mannich condensation terminal alkyne para^form^aldehyde primary amine cuprous iodide alumina solvent free microwave irradiation

Occurrence of selected aliphatic amines in source water of major cities in China

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Journal of Environmental Sciences 2012年第11期24卷 1885-1890页

作者： Haifeng Zhang Shuoyi Ren Jianwei Yu Min Yang State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Geosciences China University of PetroleumBeijing 102249China

The formation of toxic nitrogenous disinfection byproducts （N-DBPs）, such as nitrosamines, halonitromethanes and haloacetonitriles, from reactions between chlorine/chloramine and dissolved organic nitrogen in drinking water has caused great concern with regarding public health. This study revealed the occurrence of 17 aliphatic amines, some of which have been confirmed to be the precursors of N-DBPs, in source water across China. A sensitive method based on benzenesulfonyl chloride derivatization and liquid-liquid extraction followed by GC-MS analysis was established for the simultaneous analysis of the selected amines in aqueous samples. In total, 37 source water samples from the capital cities of 20 provinces were collected for the survey. Among the 17 amines, 14 were detected with an average frequency of detection of 36%. The most relevant amines in terms of frequency and maximum concentrations detected were dimethylamine （100%, 24.82 μg/L）, methylamine （78%, 0.92 μg/L）, N-methylethylamine （70%, 8.84 μg/L）, propylamine （59%, 10.69 μg/L）, diethylamine （54%, 3.76μg/L）, N-methylbutylamine （35%, 3.07 μg/L）, N-ethylpropylamine （35%, 0.52μg/L）, and piperidine （32%, 2.35 μg/L）. This is the first large scale survey of the aliphatic amines occurrence in source water in the world. The wide presence of nitrosamine precursors like dimethylamine, N-methylethylamine and diethylamine, and the precursors of haloacetonitriles and halonitromethanes like methylamine and propylamine suggests that better source water management is required to ensure the safety of drinking water.

关键词： primary amine secondary amine drinking water disinfection byproducts

A new method for the synthesis of N-substituted pyrroles

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Chinese Chemical Letters 2010年第11期21卷 1291-1294页

作者： Hai Xue Tao Ma Lin Wang Gang Liu Department of Synthetic Medicinal Chemistry Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100050 China

An unexpected reaction of 10-bromomethyl-12-oxocalanolide A（2） with primary amine was demonstrated and studied. Consequentially,a new method for the preparation of N-substituted pyrroles starting fromγ-halo-α,β-u... 详细信息

关键词： 12-Oxo-calanolide A primary amine N-Substituted pyrroles Synthesis

Facile One-pot Synthesis of Ethyl 3-Alkyl-4-hydroxy-2-thioxothiazolidine-4-carboxylates

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Chinese Journal of Chemistry 2006年第3期24卷 381-385页

作者：葛泽梅李勤郑少君程铁明崔育新李润涛 School of Pharmaceutical Sciences Peking University Beijing 100083 China

Ethyl 3-alkyl-4-hydroxy-2-thioxothiazolidine-4-carboxylates were prepared in excellent yields from the reaction of corresponding primary amines with carbon disulfide and ethyl 3-bromo-2-oxopropanoate in the presence of anhydrous potassium phosphate in DMF at room temperature within 1 h. The structures of the highly functionalized products were corroborated spectroscopically （IR, ^1H NMR, ^13C NMR, EI-MS） and by elemental analyses. A plausible mechanism for such type of cyclization was proposed.

关键词： ethyl 3-alkyl-4-hydroxy-2-thioxothiazolidine-4-carboxylate primary amine ethyl 3-bromo-2-oxopropanoate one-pot synthesis anhydrous potassium phosphate

SAPO-34 synthesized with n-butylamine as a template and its catalytic application in the methanol amination reaction

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Chinese Journal of Catalysis 2017年第3期38卷 574-582页

作者：乔昱焱吴鹏飞向骁杨淼王全义田鹏刘中民中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室辽宁大连116023 中国科学院大学北京100039

SAPO-34 was synthesized with n-butylamine（BA） as a template for the first *** temperature and initial Si amount were important factors leading to successful *** AlPO-kanemite tends to form as the major phase or as an impurity of SAPO-34 at lower crystallization temperatures,though a higher initial Si amount may offer a positive effect on the crystallization of SAPO-34 that mitigates the low *** temperature（240℃） can effectively suppress the generation of lamellar materials and allow the synthesis of pure SAPO-34 with a wider range of Si *** crystallization processes at 200 and 240℃ were investigated and *** used the aminothermal method to synthesize SAPO-34-BA at 240℃ and also found n-propylamine is a suitable template for the synthesis of *** SAPO-34-BA products were characterized by many ***-34-BA has good thermal stability,crystallinity and *** remained intact in the crystals with ~1.8 BA molecule per chabazite *** catalytic performance of SAPO-34 was tested in the methanol amination reaction,which showed high methanol conversion and selectivity for methylamine plus dimethylamine under the conditions investigated,suggesting that this material is a good candidate for the synthesis of methylamines.

关键词： SAPO-34 molecular sieve n-Butylamine primary amine Synthesis High temperature Methanol amination