新型镇痛药AF-353的合成

以1-（2-羟基-5-甲氧基）乙-1-酮为反应原料,经6步反应制得关键中间体2-（5-碘-2-异丙基-4-甲氧基苯氧）乙腈（8）,再与Bredereck试剂、盐酸苯胺和碳酸胍经“一锅法”合成新型镇痛药AF-353,总收率55%,其结构经¹H NMR和MS确证。     

吡啶基三唑功能化罗丹明化合物的合成

以2-溴甲基吡啶氢溴酸盐和叠氮化钠为原料,合成中间体2-叠氮甲基吡啶（1）;对羟基苯甲醛和溴丙炔经取代反应合成中间体4-（丙-2-炔基丙氧基）苯甲醛（2）; 2与1经点击反应制得关键中间体BPT（3）; 3与罗丹明B酰肼经还原胺化反应得罗丹明类荧光探针,其结构经¹H NMR, IR和元素分析表征。     

新型川芎嗪衍生物的合成

以川芎嗪为原料，经氧化、Boekelheide重排、水解和氧化反应合成了中间体3,5,6-三甲基吡嗪-2-甲醛（4）; 4与取代N-4-哌啶酮发生缩合反应合成了9个新型的川芎嗪衍生物，其结构经¹H NMR, ¹³C NMR和MS（ESI）表征。     

贝前列素钠（Beraprost）侧链中间体-3-甲基-2-氧代-5-庚炔基磷酸二甲酯的合成

报道了一种合成贝前列素钠（Beraprost）侧链中间体的新方法。以丙酸酐和N,O-二甲基羟胺盐酸盐为原料,经三步反应以总收率57%合成了贝前列素钠中间体3-甲基-2-氧代-5-庚炔基磷酸二甲酯,其结构经¹H NMR, ¹³C NMR 和HR-MS（ESI）确证。并对反应条件进行了优化。     

3-取代-6-吡唑基-1,2,4-三唑并[3,4-b]-1,3,4-噻二唑类衍生物的合成及生物活性

将5-取代吡唑-3-甲酸乙酯1位甲基化,经水解反应得到3种中间体1-甲基-5-取代1H-吡唑-3-甲酸（2a~2c）;以不同取代的羧酸为原料经一系列反应合成6种中间体3-取代4-氨基-5-巯基-1,2,4-均三唑（3a~3f）;将中间体（2a~2c）和（3a~3f）在三氯氧磷条件下反应,合成出18种1,2,4-三唑并[3,4-b]-1,3,4-噻二唑类化合物(4a~4r),均未见文献报道。 通过IR、1H NMR、13C NMR和元素分析表征了化合物结构。 初步的生物活性测试结果显示,所合成的化合物均表现出不同程度的生长素活性和抑菌活性。 并选取抑菌活性较好的两个化合物进行抗菌药物最低抑菌浓度(MIC)的测定。     

BF3·Et2O催化Pechmann反应一锅合成3-氨基-5,7-二羟基-4-甲基香豆素

3-氨基-5,7-二羟基-4-甲基香豆素（4）是一种新的重要有机合成中间体,可用于多种潜在生物活性物质的合成。本文将间苯三酚与2-乙酰氨基乙酰乙酸乙酯（2）在BF3.Et2O的催化作用下,经串联的Pechmann缩合反应和脱乙酰基反应一锅合成4。化合物2由乙酰乙酸乙酯经成肟、还原、酰化反应制得。中间体和目标物的结构均经1H NMR、13C NMR、MS表征。该方法具有原料廉价易得、步骤短、操作简便易控、反应条件温和、收率高的优点。     

4-溴吲哚衍生物的合成

以4-溴吲哚为原料,经3步反应合成了1-甲基4-溴吲哚乙醇(4,总收率46.9%);经5步反应合成了1-甲基4-溴吲哚乙胺(6,总收率41.3%).4和6的结构经1H NMR,13C NMR和IR表征.4和6分别是合成具重要生理活性的天然产物Communesin和Clavicipitic acid的重要中间体.     

非甾体抗炎药洛索洛芬钠的合成

以1-苯基-2-氯-1-酮为原料,经缩酮保护、重排、水解、酯化及氯甲基化等反应制得关键中间体2-（4-氯甲基苯基）丙酸甲酯（7）; 7与2-乙氧羰基环戊酮缩合后,再经脱羧及成盐反应合成了洛索洛芬钠,总收率36%,其结构经¹H NMR和MS(ESI)确证。     

新型含胍基和季铵基团壳聚糖衍生物的合成

N,N-二甲基-1,3-丙二胺与单氰胺经亲核加成反应制得中间体N,N-二甲基-N′-胍基-1,3-丙二胺（2）; 以壳聚糖为起始原料,依次与氯乙酸、环氧氯丙烷经取代反应制得N-（1-羟基-3-氯丙基）-羧甲基壳聚糖（4）; 4与2经季铵化反应合成了一系列含有胍基和季胺基团的羧甲基壳聚糖衍生物（5）,其结构经¹H NMR, IR和元素分析表征。研究了反应配比［γ=m（2）∶m（4）］和反应时间对5取代度的影响,结果表明,当γ为3∶1,反应时间为10 h时,取代度最高(73%)。     

新型麦角新碱中间体的合成

以2-甲基-3-硝基苯胺为起始原料,经Batcho-Leimgruber、酰化、还原、氧化、（R）-叔丁基亚磺酰胺的不对称诱导、烯烃闭环复分解反应等关键步骤,共经12步反应合成了麦角新碱中间体(S)-4-溴-3-｛［5-(甲氧基羰基)-1-甲基-1,2,3,6-四氢吡啶-2-基］甲基｝-1H-吲哚-1-甲酸叔丁酯,总收率7.2%,该路线涉及4个新化合物的合成,其结构经¹H NMR, ¹³C NMR和MS(ESI)表征。     

丙二酸单苯酰胺的固相法合成及其在Eaton试剂或多聚磷酸作用下的环化反应

苯胺及取代的苯胺和Meldrum’s acid在固相无催化剂条件下反应,合成了丙二酸单苯酰胺（1a-1f）,收率81．0％～92．2％．化合物1a-1f在Eaton试剂（五氧化二磷＋甲基磺酸）或多聚磷酸为环化试剂的条件下发生Friedel—Crafts分子内环化反应,以63．2％～93．8％和56．5％～81．3％的收率方便地得到4-羟基喹啉-2-酮衍生物（2a-2f）．产物的结构通过IR,^1H NMR和元素分析得以证实．     

选择性合成双[噻吩并[2,3-d]嘧啶-4(3H)-酮]

以2-氨基-4-三氟甲基-5-甲基-噻吩-3-羧酸乙酯(1)为起始原料制得膦亚胺2.在碳酸钾的催化下,膦亚胺2与芳基异氰酸酯和伯二胺的氮杂Wittig反应制得嘧啶环上2,2’取代的双[噻吩并[2,3-d]嘧啶-4(3H)-酮]3;膦亚胺2与烷基异氰酸酯和伯二胺的氮杂Wittig反应制得嘧啶环上3,3’取代的双[噻吩并[2,3-d]嘧啶-4(3H)-酮]4.化合物3的核磁共振氢谱表明关环反应在嘧啶环的2,2’位;化合物4的核磁共振氢谱表明关环反应在嘧啶环的3,3’位.对合成反应机理的推导及目标产物核磁共振氢谱数据的分析解释了此合成反应的选择性.     

Reaction of substituted furan-2-carboxaldehydes and furo[b]pyrrole type aldehydes with hippuric acid

4-Heteroarylidene-2-phenyl-1,3-oxazol-5(4H)-ones were prepared by reactions of hippuric acid with substituted furan-2-carboxaldehydes or furo[b]pyrrole type aldehydes. The reactivity of various furan-2-carboxaldehyde derivatives in this reaction is discussed. The effect of microwave irradiation on some condensation reactions was compared with "classical" conditions. The results show that microwave irradiation shortens the reaction times while affording comparable yields. Elementary analysis, UV, IR and 1D NMR proved the structure of new synthesised compounds. 2D NMR spectroscopic measurements confirmed that the configuration at the carbon-carbon double bond corresponds to the pure E isomers of the products.     

Head-to-tail regioregular oligothiophene-functionalized 9,9'-spirobifluorene derivatives. 1. Synthesis

Two series of novel fully conjugated oligomers, oligothiophene-functionalized 9,9'-spirobifluorene derivatives, have been developed in this contribution. First, four 9,9'-spirobifluorene bromide derivatives (compounds 1a-d) are prepared through various synthetic routes. Oligothiophene derivatives with or without substituents are synthesized through the Grignard and Suzuki coupling reactions. The Negishi coupling reactions between oligothienylzinc chloride and various 9,9'-spirobifluorene bromides with Pd(PPh(3))(4) as catalyst successfully produce the desired compounds, unsubstituted oligothiophene-functionalized 9,9'-spirobifluorene derivatives, compounds 2 to 4a-d. Since the Negishi coupling reactions afford regioregularly head-to-tail (H-T) oligo(4-n-hexylthiophene)-functionalized 9,9'-spirobifluorene derivatives in poor yields, the Suzuki coupling reactions between sodium 4-n-hexylthienyl-2-boronate 8, and various 9,9'-spirobifluorene-based bromides 1a-d and 9-16 are employed to produce highly regioregular head-to-tail oligothiophene-functionalized 9,9'-spirobifluorene derivatives (compounds 5 to 7a-d) in very high yields. We also investigate the effect of solvents on the Suzuki coupling reactions. The structure and purity of all compounds are verified by FT-IR, (1)H and (13)C NMR, MS, and elemental analysis.     

含吡啶基四硫富瓦烯衍生物的合成、 结构和电化学性质

在乙酰乙酸乙酯和氧化亚铜共同催化下, 二-(1,3-二硫环戊烯-2-硫酮-4,5-二硫)合锌酸四乙基铵盐分别与2-碘吡啶(1a)、 3-碘吡啶(1b)和4-碘吡啶(1c)反应, 制得硫酮化合物2,3-二(2-吡啶硫基)-1,3-二硫环戊烯-2-硫酮(2a)、 2,3-二(3-吡啶硫基)-1,3-二硫环戊烯-2-硫酮(2b)和2,3-二(4-吡啶硫基)-1,3-二硫环戊烯-2-硫酮(2c). 在醋酸汞催化下, 硫酮化合物2a, 2b和2c分别被氧化为2,3-二(2-吡啶硫基)-1,3-二硫环戊烯-2-酮(3a)、 2,3-二(3-吡啶硫基)-1,3-二硫环戊烯-2-酮(3b)和2,3-二(4-吡啶硫基)-1,3-二硫环戊烯-2-酮(3c). 以亚磷酸三乙酯为偶联剂, 氧酮化合物3a, 3b和3c分别发生自偶联反应生成2,3,6,7-四(2-吡啶硫基)四硫富瓦烯(4a)、 2,3,6,7-四(3-吡啶硫基)四硫富瓦烯(4b)和2,3,6,7-四(4-吡啶硫基)四硫富瓦烯(4c). 采用核磁共振波谱(NMR)、 傅里叶变换红外光谱(FTIR)和质谱(MS)分析了所合成化合物的结构和组成, 通过X射线衍射分析确认了吡啶基四硫富瓦烯衍生物4b和4c的晶体结构. 循环伏安法研究结果表明, 化合物4a, 4b和4c呈现准可逆的两电子转移过程, 结合量子化学计算, 分析了不同位置取代的吡啶基对四硫富瓦烯电化学电势的影响.     

Synthesis and thermolysis of alkyl- and phenylamido diphenylgallium, [Ph(2)GaN(H)R](2). isolation and structural characterization of (PhGaNMe)(7) and (PhGaNPh)(4)

Alkyl- and phenylamido diphenylgallium compounds, [Ph(2)GaN(H)R](2) (R = Me, 1; Et, 2; (n)Pr, 3; (i)Bu, 4; Ph, 5), were prepared from the reactions of Ph(3)Ga with the corresponding primary amines and aniline at elevated temperatures and were characterized by elemental analysis, mass spectroscopy, and (1)H NMR and IR spectroscopy. These dimeric compounds contained bridging amido groups and exhibited both trans and cis isomers in solution. Thermolysis of compounds 1 and 5 was carried out either without solvent or in dodecane solutions, and two clusters, (PhGaNMe)(7) 6 and (PhGaNPh)(4) 7, were isolated in 24% and 55% yields and characterized. The structure of 6 consisted of a heptameric Ga(7)N(7) core constructed with Ga(2)N(2) and Ga(3)N(3) rings, and the structure of 7 possessed a Ga(4)N(4) cubane core.     

微波辐射下芳醛与活性亚甲基化合物的反应

芳醛、5，5－二甲基－1，3－环己二酮、丙二酸亚异丙酯经微波辐射发生缩合、加成、环化及消去反应，一步合成了7，7－二甲基－4－芳基－2，5－二氧代－1，2，3，4，5，6，7，8－八氢喹啉和7，7－二甲基－4－芳基－5－氧代－3，4，5，6，7，8－六氢香豆素，反应在3－5min内完成，产率优良。产物的结构经红外及核磁共振等方法确证。     

(硫杂)杯[4]芳烃缩氨基(硫)脲(桥联)衍生物的合成

对叔丁基(硫杂)杯[4]芳烃-1,3-二醛基衍生物4a和4b与苯基氨基硫脲进行“1＋2”缩合反应, 合成了杯[4]芳烃缩氨基硫脲衍生物5a和5b, 产率为84%和85%. 化合物4a和4b与1,6-己基双氨基脲发生“1＋1”缩合反应, 合成了杯[4]芳烃双缩氨基脲桥联衍生物6a和6b, 产率为83%和80%. 新化合物的结构与构象经元素分析、质谱、核磁共振谱等表征证实.     

Studies on the esterifications of 9-（hydroxyimino）-4-methyl-8,9-dihydrofuro[2,3-h]chromen-2-one with acid chlorides under different conditions

The esterifications of 9-（hydroxyimino）-4-methyl-8,9-dihydrofuro[2,3-h]chromen-2-one （4） with acid chlorides afforded normal oxime-esters 3a-e in 35-78% yields in presence of excessive 4-dimethylaminopyridine as the acid scavenger, whereas the reactions gave unexpected 8-substituted products N-（8-chloro-4-methyl-2-oxo-2H-furo-[2,3-h]chromen-9-yl）amides （5a-c） and 4-methyl-2,9-dioxo-8,9-dihydro-2H-furo[2,3-h]chromen-8-ylcarboxyloates （6d-e） by using excessive acid chlorides. The structures of 10 new compounds were determined by 1H NMR, 13C NMR, MS and HRMS, and the possible mechanism for the formation of unexpected products 5a--c and 6d-e was also proposed.     

Synthesis of Benzofuryl Substituted Unsymmetrical Ureas Under Microwave Irradiation

A series of 2-benzofuryl substituted unsymmetrical ureas were synthesized by reactions of benzofuroyl isocyanate, which was prepared from benzofuroyl azide by Curtius rearrangement, with various aromatic amines, 2-amino-5-(benzo-2-furyl)-1,3,4-thiadiazole, and 2-amino-5-aryloxymethylene-1,3, 4-thiadiazoles under microwave irradiation. Compared to conventional methods, this synthesis has the advantages of mild reaction conditions, easy handling, and high yields. The products have been characterized by analytical and spectral (IR and ¹ H NMR) data.