儿茶酚胺类药物的流动注射化学发光分析

观察到雷盐（ＮＨ４「Ｃｒ（ＮＨ３）２」（ＳＣＮ）４」。Ｈ２Ｏ）对鲁米诺－Ｈ２Ｏ２化学发光反应的催化作用。根据儿茶酚胺类物质可与雷氏盐发生沉积反应而导致鲁米诺－Ｈ２Ｏ－２雷氏盐体系化学发光强度降低的性质，建立了儿茶酚胺类物质多巴胺，肾上腺素和异丙肾上腺素的流动注射化学发光分析法。     

化学发光酶联免疫分析测定血清中抗DNA抗体

建立起适于临床应用的抗ＤＮＡ抗体化学发光酶联免疫分析法。该法精密度良好，相对标准偏差为２．４％。比ＥＬＩＳＡ法更加简便、经济、省时，同时提高了灵敏度（８倍）和血清的阳性检出率。探讨了检测系统中对碘苯酚增强鲁米诺－过氧化氢－辣根过氧化物酶化学发光反应机理。     

N—（β—羧丙酰基）异鲁米诺的电致化学发光行为及其机理探讨

本进行了Ｎ－（β－羧丙酰基）异鲁米诺的电致化学发光行为的研究。采用正矩形液脉冲电压，在ＫＯＨ－ＫＣｌ－Ｈ２Ｏ２－（ｐＨ１１．６）介质中，Ｎ－（β－羧丙酰基）异鲁米诺测定的线性范围为４．０×１０＾－１０￣７．０×１０＾－８ｍｏｌ／Ｌ，检出限为２．０×１０＾－１０ｍｏｌ／Ｌ。本对此体系的电致化学发光机理进行了探讨。     

液相化学发光法测定人发中的锰

１引言液相化学发光分析是一种高灵敏度的分析方法。碘氧化鲁米诺化学发光反应多被用于间接和偶合法中测定一些元素。我们发现，在一定条件下，Ｍｎ（Ⅱ）对Ｉ２－鲁米诺化学发光反应有明显的抑制作用，据此建立了测定锰的新方法。研究了测定的最佳条件，线性范围１．０×１０－７～５．０×１０－１０ｇ／ｍＬ（Ｍｎ（Ⅱ）），检出限１．０×１０－ｇ／ｍＬ。实验表明，本方法灵敏度较高，选择性较好，用于人发中锰的测定，结果满意。２实验部分２．１仪器与试剂离子色谱化学发光检测器（河北四维科学技术研究所）；ＪＢ４型通用蠕动泵（江…     

流动注射-鲁米诺-高碘酸钾-过氧化氢体系的化学发光行为及其应用

详细研究了流动注射－鲁米诺－高碘酸钾－过氧化氢体系化学发光行为，给出了反应的最佳条件。拟定了一种化学发光测定过氧化氢的新方法。方法的检测限为３．０Ｘ１０－８ｍｏｌ／ＬＨ２Ｏ２；线性范围为２．０×１０－７～６．０×１０－４ｍｏｌ／Ｌ。评价了该体系的应用前景。     

毛细管电泳柱后化学发光检测装置的研制

报道自行组装的毛细管电泳柱后化学发光检测装置，鲁米诺和Ｎ－４－氨基丁基－Ｎ－乙基异鲁米诺－Ｈ２Ｏ２体系用于评价该装置的可行性，得到发光试剂鲁米诺和ＡＢＥＩ较尖锐对称的电泳分离峰，检出限分别为５０和２９０ｆｍｏｌ。基于一些金属离子对鲁米诺－Ｈ２Ｏ２的快速动力学催化反应，得到Ｃｒ（Ⅲ）和Ｚｎ（Ⅱ）离子非常尖锐的分离峰，理论塔板数达１．５１×１０＾５和１．８６×１０＾５，检出限为１５ａｍｏｌ和２ｆｍｏｌ     

亚铁氰化钾－NO_2~－－鲁米诺化学发光体系测定痕量亚硝酸盐的研究

亚铁氰化钾－ＮＯ_２~－－鲁米诺化学发光体系测定痕量亚硝酸盐的研究唐宏武，罗庆尧，余席茂，何治柯，曾云鹗（武汉大学化学系，武汉，４３００７２）关键词鲁米诺，化学发光，亚硝酸盐天然水和食品中亚硝酸盐的测定，主要用分光光度法［１～３］．此法基于重氮化－偶联...     

利用巯基棉集分离和鲁米诺—过氧化氢—铬（Ⅲ）：化学发光体系测定水…

本文提出了用鲁米诺－过氧化氢－铬（Ⅲ）化学发光体系结合巯基棉对Ａｓ（Ⅲ）的分离，建立了快速简单的测定水样中痕量砷的新方法。     

流动注射化学发光法测定痕量抗坏血酸

流动注射化学发光法测定痕量抗坏血酸沈爱宝徐秉洳季美娟吴锦明（南通医学院，南通，２２６００１）（南通师范专科学校，南通，２２６００７）抗坏血酸又称维生素Ｃ（Ｖｃ），是人体不可缺少的一种营养物质．本文报道用氯化血红素－鲁米诺－过氧化氢化学发光新体系测Ｖ...     

流动注射化学发光传感器测定抗坏血酸

基于抗坏血酸抑制ＫＭｎＯ４－鲁米诺体系化光反应这一效应，设计出一种简便，快速，灵敏度高的消耗型化学发光抗坏血酸传感器。该传感器线性响应范围为１．０＊１０＾－５－４．０＊１０＾－３ｇ／Ｌ；相对标准偏差为２．３％（１．０＊１０＾－４ｇ／Ｌ，ｎ＝１１）；     

二氧化碳和丙烯直接合成甲基丙烯酸的NiPMo/TiO2催化剂的研究

用溶胶-凝胶法以磷钼酸(MPA)的镍盐溶液水解钛酸四丁酯制备了NiPMo/TiO2催化剂.使用ICP、 XRD、 TG-DTA、 IR、 TPD-MS和微反应技术研究了催化剂的化学组成、热稳定性、化学吸附性质和催化反应性能.杂多钼酸盐与TiO2通过O2-在TiO2表面发生了键合.在623 K下,杂多阴离子仍保持原有的Keggin结构.CO2在Lewis酸位Ni(Ⅱ)和Lewis碱位Ni-O-Mo的桥氧协同作用下生成CO2卧式吸附态Ni(Ⅱ)←O-(CO)←(O--Ni).丙烯有多种吸附态在催化剂上吸附.在563 K、 1 MPa和空速1500 h-1的反应条件下,丙烯的摩尔转化率为3.2%,产物MAA选择性为95%.     

Toward new camptothecins. Part 6: Synthesis of crucial ketones and their use in Friedländer reaction

In the context of the preparation of camptothecin and luotonin A analogs, the synthesis of some key keto-precursors and their use in Friedländer condensation are described. This paper also focuses on the stability of these keto intermediates and emphasizes the major differences between indolizinones and pyrroloquinazolinones series. Noteworthy is also the report of some original structures isolated as by-products of some experiments.     

CoFe2O4自形成磁性液体场致结构化对磁化的影响

The Langevin paramagnetic theory can’t describe the relation between magnetization of ferrofluids and applied magnetic field. The structuralization of ferrofluids, which is considered the main influence factor of the magnetization, is regarded. The part of magnetization works is deposited when the structure is forming. This action influences the magnetization of ferrofluids directly or indirectly. On the base of the “compressing” model, the Langevin function that usually describes the magnetization of ferrofluid is modified, and a well-fitted curve is obtained. An equation of the relation between the equivalent volume fraction after being “compressed” and the intensity of magnetic field is discovered, which approximately describes the process of magnetization. The relation between the approximate initial susceptibility and the volume fraction can be obtained from modified formula.     

Highly regioselective Buchwald–Hartwig amination at C-2 of 2,4-dichloropyridine enabling a novel approach to 2,4-bisanilinopyridine (BAPyd) libraries

The highly regioselective Buchwald–Hartwig amination at C-2 of the cheap and readily accessible reagent, 2,4-dichloropyridine with a range of anilines and heterocyclic amines is described. This new methodology is robust and provides a facile access to 4-chloro-N-phenylpyridin-2-amines on 0.25 mol scale. These intermediates undergo a further Buchwald–Hartwig amination at higher temperature to enable rapid exploration of the chemical space at C-4 and to provide a library of 2,4-bisaminopyridines.     

KMnO4-mediated oxidative CN bond cleavage of tertiary amines: Synthesis of amides and sulfonamides

KMnO₄-mediated oxidative CN bond cleavage of tertiary amines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.     

Chemistry of heterocyclic compounds at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, over 50 years (Review)

The review contains a concise historical account and information on the most significant researches undertaken by the staff at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences on the Chemistry of Heterocyclic Compounds. Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1443–1502, October, 2008.     

Sulfur-directed metal-free and regiospecific methyl C(sp3)–H imidation of thioanisoles

Regiospecific and direct imidation of the methyl C(sp³)–H bond of thioanisoles is realized under mild and metal-free conditions with N-fluorobis(benzenesulfonyl)imide as an oxidant and nitrogen source. Proposed mechanism suggests that thionium ion intermediates and a Pummerer-type reaction are involved. The imidation has advantages such as high step-economy, excellent functionality tolerance, and regiospecificity, giving structurally diverse imidation products.     

Selective syntheses of 2H-1,3-oxazines and 1H-pyrrol-3(2H)-ones via temperature-dependent Rh(II)-carbenoid-mediated 2H-azirine-ring expansion

The Rh(II)-catalyzed reaction of 2-carbonyl-substituted 2H-azirines with ethyl 2-cyano-2-diazoacetate or 2-diazo-3,3,3-trifluoropropionate provides an easy access to 2H-1,3-oxazines and 1H-pyrrol-3(2H)-ones. These compounds can be selectively prepared from the same starting material using temperature as the only varied parameter. The 2-azabuta-1,3-diene intermediate, a common precursor for both heterocyclic products, isomerizes into 2H-1,3-oxazine under kinetic control, while 1H-pyrrol-3(2H)-one is the sole product of the reaction at elevated temperatures. According to DFT-calculations a one-atom oxazine ring contraction involving ring-opening to a 2-azabuta-1,3-diene intermediate, followed by a 1,5- and 1,2-prototropic shift leads to the consecutive formation of imidoylketene and azomethine ylide, which then further undergo cyclization to the pyrrole derivative.     

Synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives

Different approaches for the synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives from simple amino acids have been investigated. A library of 33 precursors for the preparation of N-hydroxy pyrazinones was obtained in moderate to good yields.