个性化文献订阅>文章检索

文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共11条记录   SYNTHESIS AND STRUCTURE OF 5,7-DIMETHYLTHIENO[3,4-d]PYRIDAZINE [作者：TICE NATHAN C; PEAK SARAH M; PARKIN SEAN,期刊：Heterocycles, 页码：1631-1639 , 文章类型： Article，,卷期：2010年81-7] The reaction of 2,5-dimethylthiophene-3,4-dicarboxaldehye (3) with excess hydrazine hydrate afforded the desired 5,6-fused ring thiophene derivative, 5,7-dimethylthieno[3,4-d]pyridazine (4), in high yield (82%). Pyridazi... SYNTHESIS OF SOME NOVEL BENZOBISTHIAZOLES [作者：BARRETT OSCENE V; DOWNERRILEY NADALE K; JACKSON YVETTE A,期刊：Heterocycles, 页码：1641-1649 , 文章类型： Article，,卷期：2010年81-7] The synthesis of angular and linear benzobisthiazoles pia reaction of o-methoxythiobenzanilides with AlBN and basic ferricyanide is described. MICROWAVE-ASSISTED SELECTIVE SYNTHESIS OF 2H-INDAZOLES VIA DOUBLE SONOGASHIRA COUPLING OF 3,4-DIIODOPYRAZOLES AND BERGMAN-MASAMUNE CYCLOAROMATIZATION [作者：ICHIKAWA HAYATO; OHFUNE HARUHIKO; USAMI YOSHIHIDE,期刊：Heterocycles, 页码：1651-1659 , 文章类型： Article，,卷期：2010年81-7] The microwave-assisted double Sonogashira coupling of 3,4-diiodo-1-trityl and 1-phenylpyrazole with terminal acetylene took only three minutes. Dialkynylpyrazoles, the coupling products, were heated at 240 degrees C in t... SYNTHESIS, STRUCTURE AND ELECTROCHEMICAL BEHAVIOR OF A NOVEL REDOX-ACTIVE THIACALIX[4]ARENE-TETRATHIAFULVALENE ASSEMBLY [作者：ZHAO BANGTUN; GUO WENBO; HU PUZHOU,期刊：Heterocycles, 页码：1661-1667 , 文章类型： Article，,卷期：2010年81-7] A novel redox-active thiacalix[4]arene-tetrathiafulvalene assembly 5 was carried out through triethyl phosphite-mediated cross-coupling of the corresponding two 1,3-dithiole-2-(thi)ones (3 and 4). The structure of thiaca... ASYMMETRIC 1,3-DIPOLAR CYCLOADDITION REACTIONS OF AZOMETHINE IMINES WITH ACROLEIN CATALYZED BY L-PROLINE AND ITS DERIVATIVES [作者：SUGA HIROYUKI; ARIKAWA TADASHI; ITOH KENNOSUKE; OKUMURA YUKIHISA; KAKEHI AKIKAZU; SHIRO MOTOO,期刊：Heterocycles, 页码：1669-1688 , 文章类型： Article，,卷期：2010年81-7] 1,3-Dipolar cycloadditions between acrolein and various N,N'-cyclic azomethine imines in the presence of L-proline and its derivatives as organocatalysts were investigated. Reactions that were catalyzed by (S)-indline-2-... FIRST SYNTHESIS OF 2-TROPOLONYLQUINOLINE-4-CARBOXYLIC ACID DERIVATIVES VIA PFITZINGER REACTION IN WATER [作者：GAO WENTAO; ZHANG XIAOFEI; LI YANG; LIU HUAYE; IMAFUKU KIMIAKI,期刊：Heterocycles, 页码：1689-1696 , 文章类型： Article，,卷期：2010年81-7] A facile and clean synthesis of novel 2-tropolonyl substituted quinoline-4-carboxylic acids via Pfitzinger reaction of 3-acetyltropolone or 3-acetyl-5-bromotropolone with different isatins in water was described. It was ... IMPROVED TOTAL SYNTHESIS OF RACEMIC RUTAMARIN [作者：TONG LING; XIONG RUISHENG; JIANG HONG; JIANG XIANGRUI; SUN HONGBIN; JIANG HUALIANG; SHEN JINGSHAN,期刊：Heterocycles, 页码：1697-1702 , 文章类型： Article，,卷期：2010年81-7] An improved, convenient and cost-effective process, using 2,4-dihydroxybenzaldehyde 2 as starting material for (+/-)-rutamarin 1, is described. The overall yield of 1 is 44% in eight steps, requiring no chromatographic p... SYNTHESIS OF 3-SUBSTITUTED BENZO[b]THIOPHENES VIA THE REACTION OF alpha-SUBSTITUTED 2-LITHIO-beta-METHOXYSTYRENES WITH SULFUR [作者：KOBAYASHI KAZUHIRO; NAKAI DAISUKE; FUKAMACHI SHUHEI; KONISHI HISATOSHI,期刊：Heterocycles, 页码：1703-1709 , 文章类型： Article，,卷期：2010年81-7] 3-Substitued benzo[b]thiophenes were synthesized in reasonable overall yields from alpha-substituted 2-bromo-beta-methoxystyrenes. Thus, the bromine-lithium exchange between these bromostyrenes with butyllithium in dieth... SYNTHESIS OF GALACTO- AND MANNOSUCROSES [作者：UEDA ATSUSHI; YAMASHITA TAKANORI; UENISHI JUNICHI,期刊：Heterocycles, 页码：1711-1720 , 文章类型： Article，,卷期：2010年81-7] A concise synthesis of beta-D-fructofuranosyl alpha-D-galactopyranoside (2), and beta-D-fructofuranosyl alpha-D-mannopyranoside (3) is described. Inversion of the C-3 alpha-hydroxy group of alpha-D-galactopyranosyl and a... CHEMITSRY AND BIOLOGICAL ACTIVITIES OF VIBSANE-TYPE DITERPENOIDS [作者：FUKUYAMA YOSHIYASU; KUBO MIWA; ESUMI TOMOYUKI; HARADA KENICHI; HIOKI HIDEAKI,期刊：Heterocycles, 页码：1571-1602 , 文章类型： Review，,卷期：2010年81-7] This review focuses on the structural diversity, biological activities and synthesis of vibsane-type diterpenoids. Vibsane-type diterpenoids are considered to be rarely occurring natural products because they have been f... SYNTHESIS OF NITROGEN- AND OXYGEN-BRIDGED SEVEN- TO TEN-MEMBERED CARBOCYCLES USING METATHESIS REACTIONS [作者：TAKAO KENICHI; TADANO KINICHI,期刊：Heterocycles, 页码：1603-1629 , 文章类型： Review，,卷期：2010年81-7] This review describes the synthesis of nitrogen- and oxygen-bridged seven- to ten-membered carbocycles using metathesis reactions and their applications to natural products synthesis achieved in the past decade.