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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71条记录   SIMPLE SYNTHESES OF 3-TRIFLUOROACETYL-4-QUINOLYLAMINES, SULFIDES, AND ETHERS STARTING FROM N,N-DIMETHYL-4-QUINOLYLAMINE [作者：OKADA ETSUJI; HATAKENAKA MIZUKI; SAKAEMURA TAKUSHI; SHIMOMURA NAOFUMI; ASHIDA TAKURO,期刊：Heterocycles, 页码：1177-1185 , 文章类型： Article，,卷期：2012年86-2] New 3-trifluoroacetyl-4-quinolylamines (2), sulfides (3), and ethers (4) were synthesized in good to high yields by aromatic nucleophilic substitution reactions of N,N-dimethyl-3-trifluoroacetyl-4-quinolylamine (1), whic... SYNTHESIS OF alpha-AMINO KETONES AND O-ALKYLOXIMES BY TITANIUM TETRAHALIDE PROMOTED RING-OPENING REACTION OF 2-MONO-SUBSTITUTED AZETIDIN-3-ONES AND THEIR O-ALKYLOXIMES [作者：ARIGA SHIZUKA; HATA SHINGO; FUKUDA DAISUKE; NISHI TAKAFUMI; HACHIYA IWAO; SHIMIZU MAKOTO,期刊：Heterocycles, 页码：1187-1210 , 文章类型： Article，,卷期：2012年86-2] Synthesis of alpha-amino ketones and O-alkyloximes has been developed by titanium tetrahalide-promoted ring-opening reactions of 2-mono-substituted azetidin-3-ones and their O-alkyloximes. Regarding the reductive ring-op... AN EFFECTIVE PROCEDURE TO PROMOTE AZA-PRINS CYCLIZATION REACTIONS EMPLOYING A COMBINATION OF FERRIC CHLORIDE AND AN IMIDAZOLIUM SALT IN BENZOTRIFLUORIDE [作者：OSAWA CHIKA; TATEYAMA MINAMI; MIURA KENSUKE; TAYAMA EIJI; IWAMOTO HAJIME; HASEGAWA EIETSU,期刊：Heterocycles, 页码：1211-1226 , 文章类型： Article，,卷期：2012年86-2] Aza-Prins cyclization reactions of N-tosyl-3-butenylamine with p-methoxybenzaldehyde, 1-naphthaldehyde and 2-naphthaldehyde take place efficiently using a combination 1-butyl-3-methylimidazolium of ferric chloride and he... A NEW METHOD FOR PRODUCTION OF CHIRAL 2-ARYLOXYPROPANOIC ACIDS USING EFFECTIVE KINETIC RESOLUTION OF RACEMIC 2-ARYLOXYCARBOXYLIC ACIDS [作者：TENGEIJI ATSUSHI; NAKATA KENYA; ONO KEISUKE; SHIINA ISAMU,期刊：Heterocycles, 页码：1227-1252 , 文章类型： Article，,卷期：2012年86-2] We report a novel method for the preparation of 2-aryloxypropanoic acids by kinetic resolution of racemic 2-aryloxypropanoic acids using enantioselective esterification. The usage of pivalic anhydride (Piv(2)O) as an act... AZULENOPENTATHIEPIN: PREPARATION AND CONVERSION INTO AZULENES WITH SULFUR GROUPS AT THE 1-AND 2-POSITIONS [作者：SATO OHKI; SAKAI ATSUSHI; AOKI MASAMI; KURAMOCHI TAKAAKI; NAKAYAMA JUZO,期刊：Heterocycles, 页码：1253-1260 , 文章类型： Article，,卷期：2012年86-2] Azulenopentathiepin was prepared by the reaction of azulene with elemental sulfur in boiling pyridine. Bis(thiolate) generated from the pentathiepin reacted with electrophiles such as iodomethane, methyl chloroformate, N... OPTIONAL SYNTHESIS OF 2-OR 5-SUBSTITUTED 3-BROMOPYRROLES VIA BROMINE-LITHIUM EXCHANGE OF N-BENZENESULFONYL-2,4-DIBROMOPYRROLE [作者：FUKUDA TSUTOMU; IWAO MASATOMO,期刊：Heterocycles, 页码：1261-1273 , 文章类型： Article，,卷期：2012年86-2] The regioselective bromine-lithium exchange of N-benzenesulfonyl-2,4-dibromopyrrole (6) with n-BuLi followed by treatment with various electrophiles gave 5-substituted 3-bromopyrroles (5) in excellent yields. In contrast... SYNTHESIS OF VERSATILE BIFUNCTIONAL DERIVATIVES OF CHIRAL DIAMINES OBTAINED THROUGH ANCHIMERICALLY ASSISTED NUCLEOPHILIC SUBSTITUTION REACTIONS ON DIASTEREOMERIC PHENYLPROLINOLS [作者：VARGASCAPORALI JORGE; CRUZHERNANDEZ CARLOS; JUARISTI EUSEBIO,期刊：Heterocycles, 页码：1275-1300 , 文章类型： Article，,卷期：2012年86-2] Diastereomeric [(S)-1-benzylpyrrolidin-2-yl]-(R)-[(phenyl)methanamine] and [(S)-1-benzylpyrrolidin-2-yl]-(S)-[(phenyl)methanamine], were synthesized by selective internal backside nucleophilic substitution of the corresp... SYNTHETIC STUDIES ON THE ROLE OF SUBSTITUENTS AT C-3 POSITION ON C3-C4 BOND CLEAVAGE OF beta-LACTAM RING: CONVENIENT ROUTE FOR DIASTEREOSELECTIVE SYNTHESIS OF PYRIDIN-2-ONES [作者：SINGH PARDEEP; SINGH PARVESH; KUMAR KEWAL; KUMAR VIPAN; MAHAJAN MOHINDER P; BISETTY KRISHNA,期刊：Heterocycles, 页码：1301-1322 , 文章类型： Article，,卷期：2012年86-2] The manuscript explicates the detailed synthetic studies on the effect of substituents at C-3 position of 2-azetidinones on the selective C-3/C-4 cleavage resulting in the diastereoselective synthesis of 2-pyridones furt... CHEMICAL SYNTHESIS OF COELENTERAZINE AND ITS ANALOGS: NEW ROUTE BY FOUR SEGMENT-COUPLINGS [作者：CHOU CHUNMING; TUNG YUWEN; LIN MENGI; CHAN DIANA; PHAKHODEE WONG; ISOBE MINORU,期刊：Heterocycles, 页码：1323-1339 , 文章类型： Article，,卷期：2012年86-2] A novel and improved synthetic route includes four segment-couplings toward coelenterazine and its analogs as luminescent molecules. Regio- and chemo-selective cross coupling reactions using palladium catalysts with 5-io... PALLADIUM-CATALYZED AMINATION IN THE SYNTHESIS OF MACROBICYCLES INCORPORATING CYCLEN, CYCLAM AND PYRIDINE MOIETIES [作者：AVERIN ALEXEI D; TYUTENOV KANAT S; SHUKHAEV ANTON V; KOBELEV SERGEI M; BURYAK ALEXEI K; DENAT FRANCK; GUILARD ROGER; BELETSKAYA IRINA P,期刊：Heterocycles, 页码：1341-1366 , 文章类型： Article，,卷期：2012年86-2] Palladium-catalyzed amination was successfully applied to the synthesis of macrobicyclic cryptands comprising cyclen or cyclam and pyridine moieties. Starting bis(halopyridylmethyl) substituted cyclen and cyclam were obt... TOTAL SYNTHESIS OF (+)-HETEROPLEXISOLIDE E [作者：KUTSUMURA NORIKI; KIRISEKO AKITO; SAITO TAKAO,期刊：Heterocycles, 页码：1367-1378 , 文章类型： Article，,卷期：2012年86-2] Total synthesis of (+)-heteroplexisolide E has been demonstrated. The synthetic approach exploits the one-pot regioselective Negishi coupling (methylation) and transformation of a beta-methallyl alcohol moiety to a branc... CHIRAL PRIMARY AMINO SILYL ETHER ORGANOCATALYST FOR THE ENANTIOSELECTIVE DIELS-ALDER REACTION OF 1,2-DIHYDROPYRIDINES WITH ALDEHYDES [作者：SAKUTA YUKI; KOHARI YOSHIHITO; HUTABARAT N D M ROMAULI; UWAI KOJI; KWON EUNSANG; OKUYAMA YUKO; SEKI CHIGUSA; MATSUYAMA HARUO; TAKANO NOBUHIRO; TOKIWA MICHIO; TAKESHITA MITSUHIRO; NAKANO HIROTO,期刊：Heterocycles, 页码：1379-1389 , 文章类型： Article，,卷期：2012年86-2] The enantioselective Diels-Alder reactions of 1,2-dihydropyridines with acroleins using a chiral primary amino silyl ether organocatalyst afforded chiral isoquinuclidines with good chemical yields and excellent enantiose... Mn(OAc)(3)-BASED alpha '-OXIDATIVE ACETOXYLATION OF N-TRIFLUOROACETYL VINYLOGOUS AMIDES [作者：LIN HONGYU; SNIDER BARRY B,期刊：Heterocycles, 页码：1391-1400 , 文章类型： Article，,卷期：2012年86-2] Vinylogous amides 1 and 11 are oxidized by dried Mn(OAc)(3) in benzene at 90 degrees C to pyridines 5 and 12, respectively, whereas the analogous N-trifluoroacetyl vinylogous amides 6 and 13 are oxidized by dried Mn(OAc)... ASYMMETRIC SYNTHESIS OF 1-ALKYL-2-DEOXYIMINOFURANOSES VIA THE IRIDIUM-CATALYZED INTRAMOLECULAR CYCLIZATION OF AN ALLYLIC CARBONATE [作者：NATORI YOSHIHIRO; KIKUCHI SHUNSUKE; YOSHIMURA YUICHI; KATO ATSUSHI; ADACHI ISAO; TAKAHATA HIROKI,期刊：Heterocycles, 页码：1401-1417 , 文章类型： Article，,卷期：2012年86-2] An asymmetric synthesis of 1-alkyl-2-deoxyiminofuranoses was achieved in which the Ir-catalyzed intramolecular cyclization was the key step. The diastereoselective cyclization converted an allylic carbonate into pyrrolid... TUNING THE SOLUBILITIES OF BIS-TRIAZINYLPHENANTHROLINE LIGANDS (BTPHENS) AND THEIR COMPLEXES [作者：LAVENTINE DOMINIC M; AFSAR ASHFAQ; HUDSON MICHAEL J; HARWOOD LAURENCE M,期刊：Heterocycles, 页码：1419-1429 , 文章类型： Article，,卷期：2012年86-2] A series of bis-triazinylphenanthroline ligands (BTPhens) was synthesized by modifying the triazine substituents. It was found that varying these substituents altered the solubilities of the ligands in a number of non-po... CHEMISTRY OF POLYHALOGENATED NITROBUTADIENES, 12: SYNTHESIS OF NOVEL, HIGHLY SUBSTITUTED BI- AND TRICYCLIC 5,6,7,8-TETRAHYDRO-4H-CHROMEN-5-ONES [作者：ZAPOLSKII VIKTOR A; VOGT EVAJANINA; GJIKAJ MIMOZA; KAUFMANN DIETER E,期刊：Heterocycles, 页码：1431-1447 , 文章类型： Article，,卷期：2012年86-2] Knoevenagel condensation of 3,4-push-pull-substituted thiophene-2-carbaldehydes 4 with malononitrile gives the gem-dicyanovinylthiophenes 5, followed by a Michael addition of dimedone and a subsequent cyclization to 4-(2...