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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29条记录   An Efficient Synthetic Method of N-Protected Dipeptide Acids Using Amino Acid Calcium Carboxylates in an Organic Solvent [作者：HASHIMOTO CHIKAO; TAKEGUCHI KAZUNOBU; KODOMARI MITSUO,期刊：SYNLETT, 页码：1427-1430 , 文章类型： Article，,卷期：2011年-10] The syntheses of N-protected dipeptide acids using alkaline earth metal (Mg, Ca, and Ba) carboxylates of an amino acid in organic solvents were investigated. It was found that amino acid calcium carboxylates are the most... Direct Aldol Reaction of Trifluoromethyl Ketones with Ketones Catalyzed by Et2Zn and Secondary Amines [作者：SASAKI SHIGERU; KIKUCHI KASUMI; YAMAUCHI TAKAYASU; HIGASHIYAMA KIMIO,期刊：SYNLETT, 页码：1431-1434 , 文章类型： Article，,卷期：2011年-10] The direct catalytic aldol reaction of trifluoromethyl ketones with ketones has been accomplished. The reaction was achieved in the presence of 10 mol% Et2Zn and N, N'-dimethylethylenediamine at ambient temperature to gi... Direct Benzylic Oxidation with Sodium Hypochlorite Using a New Efficient Catalytic System: TEMPO/Co(OAc)(2) [作者：JIN CAN; ZHANG LI; SU WEIKE,期刊：SYNLETT, 页码：1435-1438 , 文章类型： Article，,卷期：2011年-10] Direct benzylic oxidation of arenes was achieved using NaClO/TEMPO/Co(OAc)(2). Various aromatic aldehydes and ketones were obtained from alkylarenes directly by benzylic oxidation in good to excellent yields. The reactio... N-Aryl-2-nitrosoanilines as Intermediates in the Two-Step Synthesis of Substituted 1,2-Diarylbenzimidazoles from Simple Nitroarenes [作者：WROBEL ZBIGNIEW; STACHOWSKA KAROLINA; GRUDZIEN KRZYSZTOF; KWAST ANDRZEJ,期刊：SYNLETT, 页码：1439-1443 , 文章类型： Article，,卷期：2011年-10] N-Aryl-2-nitrosoanilines, easily available from reaction of nitroarenes with anilide anions, undergo base-promoted condensation reaction with substituted benzyl aryl sulfones, furnishing 1,2-diaryl-1H-benzimidazoles. Potassium Hydroxide Catalyzed Addition of Arylamines to Styrenes [作者：JASPERS DANIEL; DOYE SVEN,期刊：SYNLETT, 页码：1444-1448 , 文章类型： Article，,卷期：2011年-10] Potassium hydroxide is a competent and cheap catalyst for the intermolecular addition of arylamines to styrenes. The reactions are performed in nontoxic dimethyl sulfoxide and can be used for the large-scale synthesis of... Regioselectivity in Thermal Rhodium(II)-Catalysed Buchner-Type Reactions of Substituted Aryl Halides: Studies towards the Synthesis of Halide-Substituted Cycloheptatrienes [作者：WYATT EMMA E; GALLOWAY WARREN R J D; SPRING DAVID R,期刊：SYNLETT, 页码：1449-1453 , 文章类型： Article，,卷期：2011年-10] The results of Buchner-type reactions of various substituted aryl halide derivatives with ethyl diazoacetate are presented, together with a discussion of factors affecting the regioselectivity of these processes. Highly Efficient Carbamate Formation from Alcohols and Hindered Amino Acids or Esters Using N,N '-Disuccinimidyl Carbonate (DSC) [作者：LI HONGMEI; CHEN CHENGYI; PADROS JAUME BALSELLS,期刊：SYNLETT, 页码：1454-1458 , 文章类型： Article，,卷期：2011年-10] A highly efficient and straightforward protocol to prepare carbamates from alcohols and hindered amino acids/esters mediated by N,N '-disuccinimidyl carbonate (DSC) in the presence of catalytic amount of pyridine is desc... Total Synthesis of (+)-Brefeldin C Utilizing Aza-Claisen Rearrangement [作者：INAI MAKOTO; NISHII TAKESHI; MUKOUJIMA SHINGO; ESUMI TOMOYUKI; KAKU HIROTO; TOMINAGA KEIKO; ABE HIROAKI; HORIKAWA MITSUYO; TSUNODA TETSUTO,期刊：SYNLETT, 页码：1459-1461 , 文章类型： Article，,卷期：2011年-10] The total synthesis of (+)-brefeldin C was accomplished. An asymmetric aza-Claisen rearrangement developed by our laboratory was employed to construct the C-4 and C-5 stereogenic centers of (+)-brefeldin C as a key step.... Synthesis of Urea and Carbamate Glycosides Employing Unprotected Carbohydrates [作者：ICHIKAWA YOSHIYASU; KUSABA SHOHEI; MINAMI TAKAHIRO; TOMITA YUMIKO; NAKANO KEIJI; KOTSUKI HIYOSHIZO,期刊：SYNLETT, 页码：1462-1466 , 文章类型： Article，,卷期：2011年-10] A study of methods for the synthesis of urea and carbamate glycosides, starting with unprotective carbohydrates, led to the preparation of amino acid-carbohydrate conjugates in aqueous media. An Effective Nitrilimine Cycloaddition for the Synthesis of 1,3,5-Trisubstituted 1,2,4-Triazoles from Oximes with Hydrazonoyl Hydrochlorides [作者：WANG LIYA; TSENG WENCHE; LIN HUIYI; WONG FUNG FUH,期刊：SYNLETT, 页码：1467-1471 , 文章类型： Article，,卷期：2011年-10] An effective 1,3-dipolar cycloaddition for the synthesis of 1,3,5-trisubstituted 1,2,4-triazole derivatives was developed by reacting oximes with hydrazonoyl hydrochlorides using triethylamine as a base. The desired 1,3,... Palladium-Catalyzed Direct Arylation Reaction of 2,3,5-Trisubstituted Furans with Aryl Iodides or Aryl Bromides [作者：CAO HUA; SHEN DONGSHENG; ZHAN HAIYING; YANG LIUQING,期刊：SYNLETT, 页码：1472-1476 , 文章类型： Article，,卷期：2011年-10] Pd-catalyzed direct arylation of 2,3,5-trisubstituted furans with a variety of aryl iodides or aryl bromides that showed high activity with reasonably broad scope was developed. Under optimal conditions, all reactions ga... Phosphorus Oxychloride [作者：CAILLE FABIEN,期刊：SYNLETT, 页码：1477-1478 , 文章类型： Editorial Material，,卷期：2011年-10] An efficient one-pot synthesis of a library of 1-arylpyrazolo[3,4-d] pyrimidin-4-ones 2 has been reported. 12 Phosphorus oxychloride acts both as a chlorinating agent and an oxidant to generate in situ the reactive carbo... Isatoic Anhydride [作者：ROY SUDIPTA RAHA,期刊：SYNLETT, 页码：1479-1480 , 文章类型： Editorial Material，,卷期：2011年-10] 2,3-Dihydroquinazolin-4(1H)-ones: This molecular framework possess a wide range of pharmaceutical activities, for example, they are used as antifertile, antibacterial, and antifungal agents. The compounds can be synthesi...