Theoretical Studies on the Mechanism of Mannich Reaction Involving Iminium Salt as Potential Mannich Reagent(4)——Use 2-Methylpropaldehyde as Pseudo-acid Component

以一个真实的Ｍａｎｎｉｃｈ试剂（ＣＨ３）２Ｎ＋ＣＨ２·Ｃｌ－作为研究对象．根据ＡＭ１方法的计算结果，胺、醛及伪酸在中性和酸性介质中的经典Ｍａｎｎｉｃｈ反应的关键步骤的活化能分别为３９０．０和３２１．８ｋＪ／ｍｏｌ．而由新Ｍａｎｎｉｃｈ试剂参与的Ｍａｎｎｉｃｈ反应的关键步骤活化能则为２７８．６ｋＪ／ｍｏｌ．因此新Ｍａｎｎｉｃｈ试剂可以提高反应速率，还分析了新Ｍａｎｎｉｃｈ试剂能降低反应活化能的原因．此外还讨论了另一种可大大降低活化能的新Ｍａｎｎｉｃｈ反应机理本文是研究Ｍａｎｎｉｃｈ反应机理的系列文章之一．     

Capillary Electrophoretic Separation of Monosialogangliosides by using cyclodectrin and borax as selectors

ＴＯｗｈｏｍｃｏ￣ｎｄｅｎＣｅｓｈｏｕｌｄｂｅａｄｄｒｅＳＳｅｄＢｏｔｈＭＳＧＬＳａｎｄＣＤｃｏｎｔａｉｎｈｙｄｒｏｎｙｌｇｒｏｕｐｓｏｎａｄｊａｃｅｎｔｃａｎｏｎａｔｏｍｓ．ＩｔｈａｓｂｅｅｎｋｎｏｗｎｔｈａｔｐｏｌｙｈｙｄｒｏｘｙｃｏｍｐｏｕｎｄｓｃａｎｆｏｒｍｉｒｏｎｉｃｃｏｍｐｌｅｘｅｓｗｉｔｈｂｏｒａｘＩＳ］．Ｂ｝＇ａｄｄｉｎｇｂｏｒａｘｔｏｔｈｅｂｕｆｆｅｒｃｏｎｔａｉｎｉｎｇｏｒ－ＣＤ，ｔｈｅｓｅｐｂｏｏｎｏｆＭＳＧＬＳｔｉ．ａｓｉｍｐｒｏｖｅｄｄｒ￣ｃａｌｌｙ．ａｓｓｈｏｗｎｉｎＦｉｇ．１．ＩｍｐｒｏｖｅｍｅｎｔｏｆｓｅｌｅｃｔｉｖｉｔｙｗａｓｐｒｅｓＵｍａｂｌ｝．ｄｕｅｔｏｃｏｍｐｌｅｘａｔｉｏｎｏｆｔｈｅＭＳＧＬＳｗｉｔｈｂｏｒａｘａｎｄａ－ＣＤｉｎｔｈｅｓｏｌｕｔｉｏｎ．ＯｕｒｏｂｓｅｒｖａｔｉｏｎｓｓｈｏｗｅｄｔｈａｔｔｈｅｃｏｎｃｅｎｔｒａｔｉｏｎｏｆｂｏｒａｘａｎｄｔｈｅＰＨｉｎｔｈｅｂａｅｒａｒｅｃｒｉｔｉｃａｌｆａｃｔｏｒｓｔｈｅｃｈｎｇｔｈｅｒｅｓｏｌｕｈｏｎｏｆＭＳＧＬＳ．ＤｅｃｒｅａｓｉｎｇｔｈｅｃｏｎｃｅｎｔｒａｔｉｏｎＯｆｂｏｒａｘｆｒｏｍ１００ｔｏ５０ａｍｏｋｓ．     

Chemisorbed dimethylammonium chlorochromate as selective oxidants for primary and second aryAlcohols

ＣｈｅｍｉｓｏｒｂｅｄＤｉｍｅｔｈｙｌａｍｍｏｎｉｕｍＣｈｌｏｒｏｃｈｒｏｍａｔｅａｓＳｅｌｅｃｔｉｖｅＯｘｉｄａｎｔｓｆｏｒＰｒｉｍａｒｙａｎｄＳｅｃｏｎｄａｒｙＡｌｃｏｈｏｌｓＧｕｉＳｈｅｎｇＺＨＡＮＧ；ＱｉＺｅｎｇＳＨＩ；ＭｉＦｅｎｇＣＨＥＮ；...     

New Evidences for the Adsorption of Methane over Oxide Surfaces

ＮｅｗＥｖｉｄｅｎｃｅｓｆｏｒｔｈｅＡｄｓｏｒｐｔｉｏｎｏｆＭｅｔｈａｎｅｏｖｅｒOｘｉｄｅＳｕｒｆａｃｅｓＮｅｗＥｖｉｄｅｎｃｅｓｆｏｒｔｈｅＡｄｓｏｒｐｔｉｏｎｏｆＭｅｔｈａｎｅｏｖｅｒＯｘｉｄｅＳｕｒｆａｃｅｓ￥ＦａＱｉａｎｇＸＵ；ＳｈｉＫｏｎ?..     

2－戊酮、芳香醛与芳香胺的Mannich反应

２－戊酮、芳香醛与芳香胺的Ｍａｎｎｉｃｈ反应邹君华，易林（西南师范大学化学系，重庆６３０７１５）关键词Ｍａｎｎｉｃｈ反应，芳香醛，芳香胺，２－戊酮８０年代以前，一般认为芳香胺与甲醛及含有α－氢的酮不能发生Ｍａｎｎｉｃｈ反应￣［１，２，３］，相应的Ｍａ...     

Two New Sesquiterpenes from Ligularia Intermedia

ＴｗｏＮｅｗＳｅｓｑｕｉｔｅｒｐｅｎｅｓｆｒｏｍＬｉｇｕｌａｒｉａＩｎｔｅｒｍｅｄｉａＨｏｎｇＭｉｎｇＣＨＥＮ；ＭｅｎｇＳｈｅｎＣＡＩ＆ＺｈｏｎｇＪｉａｎＪＩＡ（ＳｃｈｏｏｌｏｆＰｈａｒｍａｃｅｕｔｉｃａｌＳｃｉｅｎｃｅｓ，ＢｅｉｊｉｎｇＭｅｄｉｃａ...     

Crystal Structure of Complex （Et4N）[VFe3S4Cl3（CH3CN）3]

1　ＩＮＴＲＯＤＵＣＴＩＯＮＳｉｎｃｅ1980,ｍａｎｙＶ/Ｆｅ/Ｓｈｅｔｅｒｏｍｅｔａｌｌｉｃｓｕｌｆｕｒｃｌｕｓｔｅｒｃｏｍｐｏｕｎｄｓｈａｖｅｂｅｅｎｒｅｐｏｒｔｅｄ.ＲａｕｃｈｆｕｓｓｅｔａｌｏｂｔａｉｎｅｄｔｗｏｋｉｎｄｓｏｆＶ/Ｆｅ/Ｓｃｏｍｐｏｕｎｄｓ[1]ｕｓｉｎｇ(ＣＨ3Ｃ5Ｈ4)2Ｖ2Ｓ4ａｓａｎｏｒｇａｎｏｍｅｔａｌｌｉｃｌｉｇａｎｄ,ｏｎｅｉｓ(ＭｅＣｐ)2Ｖ2Ｆｅ2(ＮＯ)2Ｓ4ｗｉｔｈａｃｕｂａｎｅｌｉｋｅｓｔｒｕｃｔｕｒｅａｎｄａｎｏｔｈｅｒｉｓ(ＭｅＣｐ)2Ｖ2Ｓ4Ｆｅ(ＮＯ)2ａｎｄ(ＭｅＣｐ)2Ｖ2Ｓ4…     

Amperometric Glucose Sensor with Tetrathiafulvalene as an Electron Transfer Mediator

ＡｍｐｅｒｏｍｅｔｒｉｃＧｌｕｃｏｓｅＳｅｎｓｏｒｗｉｔｈＴｅｔｒａｔｈｉａｆｕｌｖａｌｅｎｅａｓａｎＥｌｅｃｔｒｏｎＴｒａｎｓｆｅｒＭｅｄｉａｔｏｒＳＵＮＣｈａｎｇ－ｑｉｎｇ，ＹＡＮＧＸｕ，ＬＵＡＮＣｈａｉ－ｘｉａ，ＧＡＯＱｉａｎａｎｄＸＵＨｏｎｇ...     

Synthesis and Structure of Tungsten(Ⅵ)-citrate Complex K_6[W_2O_5(cit)_2]·5H_2O

ＩｎｔｒｏｄｕｃｔｉｏｎＲｅｓｓｓ［１，２］ｒｅｃｅｎｔｓｔｕｄｙｒｅｓｕｌｔｓｓｈｏｗｔｈａｔｔｈｅＦｅＭｏ－ｃｏｆａｃｔｏｒｃｏｎｓｉｓｔｓｏｆｔｗｏｃｕｂａｎｅｆｒａｇ－ｍｅｎｔｓ［Ｆｅ４Ｓ３］ａｎｄ［Ｆｅ３ＭｏＳ３］ｂｏｕｎｄｂｙｔｈｒｅｅ...     

Total Synthesis of dl-Ligustiphenol

ＴｏｔａｌＳｙｎｔｈｅｓｉｓｏｆｄｌ－ＬｉｇｕｓｔｉｐｈｅｎｏｌＹａｎＨｅＨＵＡＮＧａｎｄＤｅＱｕａｎＹＵ（ＩｎｓｔｉｔｕｔｅｏｆＭａｔｅｒｉａＭｅｄｉｃａ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＭｅｄｉｃａｌＳｃｉｅｎｃｅｓａｎｄＰｅｋｉｎｇＵｎｉｏｎＭ...     

Synthesis and structure of a novel MoFe_4S_4 cubane-like cluster (Me_3PhCH_2N)_2[MoFe_4S_4(SC_6H_(11))_7]

Ｉｔｉｓｗｅｌｌｋｎｏｗｎｔｈａｔｉｎｎａｔｕｒｅｔｈｅａｃｔｉｖａｔｉｏｎａｎｄｒｅｄｕｃｔｉｏｎｏｆｄｉｎｉｔｒｏｇｅｎｉｎａｉｒｔｏａｍｍｏｎｉａａｒｅｃａｔａｌｙｚｅｄｂｙｎｉｔｒｏｇｅｎａｓｅａｔａｍｂｉｅｎｔｔｅｍｐｅｒａｔｕｒｅａｎｄｐｒｅｓｓｕｒｅ.ＴｈｅｍａｉｎｃｏｍｐｏｎｅｎｔｓｏｆｔｈｅａｃｔｉｖｅｃｌｕｓｔｅｒｏｆＭｏＦｅｐｒｏｔｅｉｎｉｎｎｉｔｒｏｇｅｎａｓｅａｒｅＭｃｌｕｓｔｅｒ(ＭｏＦｅ7Ｓ9ｃｌｕｓｔｅｒ)ａｎｄＰｃｌｕｓｔｅｒ(Ｆｅ8Ｓ8ｃｌｕｓｔｅｒ)[1].Ｉｎｔｈｅｌ…     

Synthesis and Structure of Dinuclear Molybdenum Carbonyl Thiolate Compound 〔Et_4N〕_2〔Mo_2(CO)_8(SC_6H_4-OCH_3-p)_2〕

１　ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｏｕｒｅｆｆｏｒｔｓｔｏｄｅｖｅｌｏｐｔｈｅｌｏｗ－ｖａｌｅｎｃｅＭｏ－ＳＲｃｏｍｐｏｕｎｄｓ,ｗｅｈａｖｅｆｏｕｎｄａｎＭｏ（０）－ｃｏｍｐｏｕｎｄ,〔Ｍｏ２（ＳＲ）２（ＣＯ）８〕２－,ｗｈｉｃｈｉｓｏｂｔａｉｎｅｄｆｒｏｍｔｈｅｒｅａｃｔｉｏｎｏｆＭｏ（ＣＯ）６ｗｉｔｈＲＳ－ｉｎｈｉｇｈｙｉｅｌｄ,ｐｏｓｓｅｓｓｅｓａｎｉｎｔｅｒｅｓｔｉｎｇｔｗｏ－ｅｌｅｃｔｒｏｎｔｒａｎｓｆｅｒｐｒｏｐｅｒｔｙ．Ｎｕｍｅｒｏｕｓｋｉｎｄｓｏｆｄｉｎｕｃｌｅａｒｍｏｌｙｂｄｅ…     

Studies on Chem icalCom position ofIron-m olybdenum Cofactor fromNitrogenase by Fluorescence Analysis

ＩｎｔｒｏｄｕｃｔｉｏｎＮｉｔｒｏｇｅｎａｓｅｆｒｏｍａｖａｒｉｅｔｙｏｆＮ２－ｆｉｘｉｎｇｏｒｇａｎｉｓｍｓｉｓｃｏｍｐｏｓｅｄｏｆｔｗｏ－ｃｏｍｐｏｎｅｎｔｐｒｏｔｅｉｎ，ＭｏＦｅ－ｐｒｏｔｅｉｎａｎｄＦｅ－ｐｒｏｔｅｉｎ．Ｆｅ－ｐｒｏｔｅｉｎｃｏｎｔａｉｎｓａｓｉｎｇｌｅＦｅ４Ｓ４－ｃｌｕｓｔｅｒ，ｗｈｉｃｈｈａｓｔｈｅｆｕｎｃｔｉｏｎｏｆｔｒａｎｓｆｅｒｉｎｇｅｌｅｃｔｒｏｎｓｆｒｏｍｄｏｎｏｒｔｏＭｏＦｅ－ｐｒｏｔｅｉｎ．ＭｏＦｅ－ｐｒｏｔｅｉｎｃｏｎｔａｉｎｓＰ－ｃｌｕｓｔｅｒｐａｉ…     

Synthesis and Structure of a Novel Cluster with Trigonal-bipyramidal Ge_2Ru_3 Core

ＩｎｔｒｏｄｕｃｔｉｏｎＷｅｒｅｃｅｎｔｌｙｒｅｐｏｒｔｅｄａｎｉｎｔｒａｍｏｌｅｃｕｌａｒｔｈｅｒｍａｌｒｅａｒ ｒａｎｇｅｍｅｎｔｂｅｔｗｅｅｎＳｉ—ＳｉａｎｄＦｅ—Ｆｅｂｏｎｄｓｉｎｔｈｅｄｉｎｕ ｃｌｅａｒｉｒｏｎｃｏｍｐｌｅｘ { (Ｍｅ2 ＳｉＳｉＭｅ2 ) [(η5 Ｃ5Ｈ4 )Ｆｅ(ＣＯ) ]2 (μ ＣＯ) 2 } (Ｓｃｈｅｍｅ 1) .1 5Ｔｈｅｔｈｅｒｍａｌｒｅａｒｒａｎｇｅｍｅｎｔｗａｓｌａｔｅｒｅｘｔｅｎｄｅｄｔｏｇｅｒｍａｎｉｕｍ ｉｒｏｎａｎｄｓｉｌｉｃｏｎ ｒｕｔｈｅｎｉ ｕｍａｎａｌｏｇｕｅｓ .6 8Ｔｈ…     

THE SYSTHESIS OF GANODER PURINE

ＴＨＥＳＹＳＴＨＥＳＩＳＯＦＧＡＮＯＤＥＲＰＵＲＩＮＥ￥ＹｕｎＺｈｅｎＪＩＡＮＧ；ＸｉａｏＬｉｎＴＡＮＧ（ＩｎｓｔｉｔｕｔｅｏｆＭａｔｅｒｉａＭｅｄｉｃａＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＭｅｄｉｃａｌＳｃｉｅｎｃｅｓＢｅｉｊｉｎｇ１０００５０）Ａｂｓ...     

Inorganic-Organic Hybrid 18-Molybdodiphosphate Nanoparticles Bulk-modified Carbon Paste Electrode and Its Electrocatalysis

ＩｎｔｒｏｄｕｃｔｉｏｎＰｏｌｙｏｘｏｍｅｔａｌａｔｅｓ (ＰＯＭｓ)ａｒｅａｌａｒｇｅａｎｄｒａｐｉｄｌｙｇｒｏｗｉｎｇｃｌａｓｓｏｆｃｏｍｐｏｕｎｄｓｔｈａｔｇｅｎｅｒａｌｌｙｕｎｄｅｒｇｏａｓｅｒｉｅｓｏｆｃｏｎｓｅｃｕｔｉｖｅｏｎｅ ｏｒｍｕｌｔｉ ｅｌｅｃｔｒｏｎｒｅｖｅｒｓｉｂｌｅｒｅｄｏｘｐｒｏ ｃｅｓｓｅｓ.1 4 Ｔｈｉｓｐｒｏｐｅｒｔｙｍａｋｅｓｔｈｅｍｖｅｒｙａｔｔｒａｃｔｉｖｅｉｎｅｌｅｃｔｒｏｄｅｍｏｄｉｆｉｃａｔｉｏｎ .ＳａｄａｋａｎｅａｎｄＳｔｅｃｋｈａｎ5ｈａｖｅｐｒｅ ｓｅ…     

Mechanisms of Excitation Transfer in Bilayer Vesicles Containing Schiff Base Moiety Adsorbed Dye Anions

ＭｅｃｈａｎｉｓｍｓｏｆＥｘｃｉｔａｔｉｏｎＴｒａｎｓｆｅｒｉｎＢｉｌａｙｅｒＶｅｓｉｃｌｅｓＣｏｎｔａｉｎｉｎｇＳｃｈｉｆｆＢａｓｅＭｏｉｅｔｙＡｄｓｏｒｂｅｄＤｙｅＡｎｉｏｎｓＭＡＤｏｎｇ－ｓｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ,...     

Studies on the Mechanism of Methyl Methacrylate Polymerization Initiated by Volatile and Nonvolatile Products of Methyl Methacrylate Plasma

ＳｔｕｄｉｅｓｏｎｔｈｅＭｅｃｈａｎｉｓｍｏｆＭｅｔｈｙｌＭｅｔｈａｃｒｙｌａｔｅＰｏｌｙｍｅｒｉｚａｔｉｏｎｉｎｉｔｉａｔｅｄｂｙＶｏｌａｔｉｌｅａｎｄＮｏｎｖｏｌａｔｉｌｅＰｒｏｄｕｃｔｓｏｆＭｅｔｈｙｌＭｅｔｈａｃｒｙｌａｔｅＰｌａｓｍａＬＩＵ...     

Study on the Methods Of Adsorbent Enriching－SFE Desorbing and Off－line GC－MS－DS Determination of Trace Organic Pollutants from Coal Smoke

ＳｔｕｄｙｏｎｔｈｅＭｅｔｈｏｄｓＯｆＡｄｓｏｒｂｅｎｔＥｎｒｉｃｈｉｎｇ－ＳＦＥＤｅｓｏｒｂｉｎｇａｎｄＯｆｆ－ｌｉｎｅＧＣ－ＭＳ－ＤＳＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＯｒｇａｎｉｃＰｏｌｌｕｔａｎｔｓｆｒｏｍＣｏａｌＳｍｏｋｅＺｈａｏＪｉ...     

Ultra-thin Oxide Films on SiO2: An STM Study of Their Thermal Stability in the Presence of Au Deposit

ＩｎｔｒｏｄｕｃｔｉｏｎＭｅｔａｌ ｏｘｉｄｅ ｓｅｍｉｃｏｎｄｕｃｔｏｒ(ＭＯＳ)ｓｔｒｕｃｔｕｒｅｉｎ ｖｏｌｖｉｎｇａｔｈｉｎｌａｙｅｒｏｆＳｉＯ2 ｓａｎｄｗｉｃｈｅｄｂｅｔｗｅｅｎａＳｉｓｕｂｓｔｒａｔｅａｎｄａｍｅｔａｌｇａｔｅｅｌｅｃｔｒｏｄｅｉｓｏｆｃｒｕｃｉａｌｉｍ ｐｏｒｔａｎｃｅｉｎｆｉｅｌｄｅｆｆｅｃｔｔｒａｎｓｉｓｔｏｒｓ .Ａｔｐｒｅｓｅｎｔ,ｏｘｉｄｅｂａｒｒｉｅｒｌａｙｅｒｓａｓｔｈｉｎａｓ 80 ａｒｅｕｓｅｄｉｎｈｉｇｈｐｅｒｆｏｒ ｍａｎｃｅｓｉｌｉｃｏｎｄｅｖｉｃｅｓ[1]…