双(三苯基锗)不饱和烃基膦酸酯的合成

随着倍半氧锗类化合物的合成及应用研究的日益广泛,含Ge-O键的烃基锗衍生物的合成及应用研究也逐渐引起了人们的关注,相继合成了各种类型具有抗癌活性的含Ge-O键的烃基锗类化合物[1～3].但烃基锗膦酸衍生物的合成及应用研究尚未见文献报道.为了探讨该类化合物的结构及生物活性,本文以三苯基氯化锗和烯(炔)基膦酸钠为原料,合成了8种双(三苯基锗)不饱和烃基膦酸酯.……     

三苄基锡(Ⅳ)炔基(烯基)膦酸衍生物的合成及结构表征

烃基锡的膦(磷)酸衍生物具有较强的杀虫、杀菌及除草等生物活性, 受到人们的极大关注[1,2],尤其是三烃基锡(IV)二硫代磷酸酯的合成及应用研究已有较多报道[3,4],但三烃基锡(IV)膦酸衍生物的合成研究很少[5],而三烃基锡(IV)不饱和烃基膦酸衍生物R3SnOP(O)(OH)R'(R'为炔基或烯基)的研究尚未见文献报道.我们以三苄基氯化锡和炔基(烯基)膦酸单钠为原料,合成了6种三苄基锡(IV)炔基(烯基)膦酸类化合物.并用元素分析、红外光谱、核磁共振、氢谱和锡谱、质谱及热重分析等手段表征了这些化合物.     

三苯基锗烯或炔基膦酸衍生物的合成

由三苯基氯化猪与烯或炔基膦酸盐反应,合成了８种新的三苯基锗烯基或炔基膦酸衍生物,利用元素分析,ＩＲ和ＨＮＭＲ表征了这些化合物的结构     

苯基锡炔基膦酸酯的合成

由于烃基锡的磷(膦)酸衍生物具有广泛的生物活性,近年来受到人们的极大关注,相继合成出了许多具有杀虫、杀菌、除草等性能的烃基锡-O,O-二烃基二硫代磷酸酯[1,2]、烃基锡-O-烃基膦酸酯[3]等.但烃基锡烃基膦酸酯的研究则很少,尤其是烃基锡不饱和膦酸酯的研究至今仅有一篇文献[4].本文以二(三)苯基氯化锡和炔基膦酸二钠为原料,合成了10种新的苯基锡炔基膦酸酯,以期获得高生物活性的有机锡化合物.     

三苄基锡(IV)炔基(烯基)膦酸衍生物的合成及结构表征

烃基锡的膦（磷）酸衍生物具有较强的杀虫、杀菌及除草等生物活性,受到人们的极大关注［１,２］,尤其是三烃基锡（ＩＶ）二硫代磷酸酯的合成及应用研究已有较多报道［３,４］,但三烃基锡（ＩＶ）膦酸衍生物的合成研究很少［５］,而三烃基锡（ＩＶ）不饱和烃基膦酸衍生物Ｒ３ＳｎＯＰ（Ｏ）（ＯＨ）Ｒ’（Ｒ’为炔基或烯基）的研究尚未见文献报道。我们以三苄基氯化锡和炔基（烯基）膦酸单钠为原料,合成了６种三苄基锡（ＩＶ）炔基（烯基）膦酸类化合物。并用元素分析、红外光谱、核磁共振、氢谱和锡谱、质谱及热重分析等手段表征了这些化合…     

三苯基锗不饱和烃基膦酸衍生物的合成和性质

随着倍半锗氧类化合物的合成及应用研究的日益广泛,含Ge_O键的烃基锗衍生物的合成及应用也逐渐引起了人们的关注.1984年,Lukevics等[1]合成了具有抗癌活性的介吗川类化合物,1990年Kakimoto等[2]报道了具有杀菌活性的环状烃基羧酸的合成与应用.     

三苯基锗二硫代氨基甲酸酯的合成及表征

近年来 ,人们相继合成了有机锗倍半硫化物、有机锗硫杂环戊酮、含硫的螺环有机锗等化合Scheme1　 Synthetic route of compound物[1,2 ] .但烃基锗二硫代氨基甲酸酯类化合物尚未见报道 .我们 [3,4 ] 发现 ,有机锡二硫代氨基甲酸酯类化合物有很强的生物活性 .鉴于有机锗化合物比有机锡化合物毒性低得多 ,且副作用小 ,我们以三苯基氯化锗和二硫代氨基甲酸盐为原料 ,合成了一系列新型的有机锗含硫衍生物 (反应式如Scheme1所示 ) ,并对其结构进行了表征 ,初步生物活性测试结果表明 ,部分化合物显示出较强的抗癌活性 .1　实　　验1 .1　仪器与…     

有机胂化合物的研究——Ⅷ.胂叶立德与叠氮化合物的反应

膦叶立德或硫叶立德与叠氮化合物反应,前者失掉三苯基氧化膦,生成三氮杂茂衍生物;后者失掉二烃基硫,生成苯胺基富马型衍生物和少量三氮烯基富马型衍生物及环丙烷衍生物.胂叶立德与双烯酮的反应,类似于硫叶立德.本文报道胂叶立德与叠氮化合物的反应,进一步探索胂叶立德的一些反应特性.     

O-烷基α-(取代苯氧乙酰氧基)烃基膦酸盐的合成与生物活性

为了研究O-烷基α-(取代苯氧乙酰氧基)烃基膦酸衍生物的结构活性关系,以取代苯氧乙酸为起始原料,经氯化亚砜氯化后得中间体2,然后与不同取代的α-羟基烃基膦酸酯(1)反应制备关键中间体3,再与碘化钠或溴化锂反应,合成了14个未见文献报道的O-烷基α-(取代苯氧乙酰氧基)烃基膦酸盐4.通过1H NMR,IR,MS和元素分析对所合成的化合物进行了结构表征.初步的生物活性测试结果表明:大多数目标化合物具有较好的除草活性或杀菌活性.化合物4a在1.5 kg/ha剂量下对所测单、双子叶植物的抑制率均达到了100%;在50μg/g的剂量下,化合物4h~4m对油菜菌核菌和黄瓜灰霉菌的抑制率达到90%以上.     

2-氨基-4H-咪唑啉-4-酮衍生物的快速平行合成法

咪唑啉酮衍生物是一类具有良好生物活性和药理活性的杂环化合物 [1,2 ] ,尤其是一些 2 -氨基咪唑啉酮表现出良好的杀菌、抗炎及抗癌活性 [3 ,4 ] .从自然界如一些海洋生物中可分离得到含 2 -氨基咪唑啉酮结构的生物碱 [5,6] .最近 ,组合化学方法广泛地应用于有机合成 ,它包括固相合成法和液相合成法[7～ 9] .我们曾应用氮杂 Wittig反应制得 2 -氨基取代咪唑啉酮衍生物 ,部分化合物表现出一定的抑菌活性 [10 ,11] .本文进一步报道应用液相平行反应法快速合成 2 -氨基 - 4H-咪唑啉 - 4-酮衍生物 (4) .该方法应用烯基膦亚胺 1与苯基异氰酸酯的…     

三苯基锗炔基膦酸酯的合成和表征

０IntroductionInrecentyears，thechemistryoforganogermaniumcompoundswasextensivelystudiedbecauseoftheirbiologicalactivity犤１，２犦．Organotinderivativesofoxyandthiophosphorusacidarewell－known犤３～５犦．Inourearlywork，theorganotinderivativesofalkynyloralkenylphosphateweresynthesizedandtheirstructuresandbiologicalactivitieswerealsostudied犤６～８犦．Sofar，tri－organogermaniumderivativesofphosphonicacidhavenotbeenreported．Inthispaper，O－bis（triphenylgermanium）alkynylphosphatesandO－trip…     

Organopalladium approaches to prostaglandins. 1. Synthesis of thiophene-containing prostaglandin endoperoxide analogs via thienylpalladation of bicycle olefins

Thiophene-containing prostaglandin endoperoxide analogs are readily available by addition of thienylpalladium species to bicyclic olefins and subsequent treatment with alkenyl or alkynyl organometallics. Hydrogenation affords bicyclic and tricyclic prostanoic acid analogs.     

Ruthenium-catalyzed homo Diels-Alder [2 + 2 + 2] cycloadditions of alkynyl phosphonates with bicyclo[2.2.1]hepta-2,5-diene

Ruthenium-catalyzed homo Diels-Alder [2 + 2 + 2] cycloadditions between alkynyl phosphonates and bicyclo[2.2.1]hepta-2,5-diene were studied. The observed reactivity was found to be dependent on the presence of the phosphonate moiety. The Ru-catalyzed cycloaddition was compatible with a variety of aromatic and aliphatic substituted alkynyl phosphonates, providing the corresponding phosphonate substituted deltacyclenes in low to good yields (up to 88%).     

A one‐pot,stereoselective synthesis of 2‐ethoxycarbonyl‐substituted 1,3‐dienes and 1,3‐enynes by hydrostannylation–Stille tandem reaction of tributyltin hydride with alkynyl esters and alkenyl or alkynyl halides

2‐Ethoxycarbonyl‐substituted 1,3‐dienes and 1,3‐enynes can be stereoselectively synthesized in one pot under mild conditions, in good yields, by the palladium‐catalyzed hydrostannylation of alkynyl esters, followed by Stille coupling with alkenyl or alkynyl halides, respectively. Copyright © 2009 John Wiley & Sons, Ltd.     

Oxidative Addition of Alkenyl and Alkynyl Iodides to a AuI Complex

The first isolated examples of intermolecular oxidative addition of alkenyl and alkynyl iodides to Au^I are reported. Using a 5,5′‐difluoro‐2,2′‐bipyridyl ligated complex, oxidative addition of geometrically defined alkenyl iodides occurs readily, reversibly and stereospecifically to give alkenyl‐Au^III complexes. Conversely, reversible alkynyl iodide oxidative addition generates bimetallic complexes containing both Au^III and Au^I centers. Stoichiometric studies show that both new initiation modes can form the basis for the development of C?C bond forming cross‐couplings.     

Intramolecular cyanoamidation of unsaturated cyanoformamides catalyzed by palladium: an efficient synthesis of multi-functionalized lactams

The Pd(0)-catalyzed intramolecular cyanoamidation of several unsaturated cyanoformamides with alkenyl, allenyl, and alkynyl groups was investigated. In the cases of alkynyl and 1,1-disubstituted alkenyl cyanoformamides, the Pd(0)-catalyzed C-CN activation and subsequent insertion reaction proceeded smoothly and gave the corresponding lactams bearing a cyano group at the β-position in good yields. The mechanism of the reaction was also discussed.     

PREPARATION OF QUINOLINES SUBSTITUTED AT THE 2 OR 3 POSITION BY AN ALKENYL OR ALKYNYL CHAIN

ABSTRACT

Quinolines substituted by a functionalized alkenyl or an alkynyl chain, either at the 2 or 3 position, were efficiently synthesized from 2-quinaldehyde and 3-bromoquinoline, respectively.     

Evaluation of tributylgermanium hydride as a reagent for the reductive alkylation of active olefins with alkyl halides

The reductive alkylation of acrylonitrile and of 2-cyclohexen-1-one by alkyl halides using tributylgermanium hydride was systematically evaluated. The performance of the germanium reagent was compared to that of the more commonly employed tributyltin hydride. For certain applications the germanium reagent afforded improved yields without the use of large excess olefin concentrations. Disadvantages of the germanium reagent include a tendency to hydrogermylate active terminal olefins and a general low reactivity towards alkyl halide substrates. The following series of six other triorganotin and triorganogermanium hydrides were also briefly screened for possible application to reductive alkylations: trimesityltin hydride, trimesitylgermanium hydride, triphenyltin hydride, triphenylgermanium hydride, trineopentyltin hydride, and tricyclohexylgermanium hydride.