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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60条记录   Modulating the Photoisomerization of N,C-Chelate Organoboranes with Triplet Acceptors [作者：HUDSON ZACHARY M; KO SOOBYUNG; YAMAGUCHI SHIGEHIRO; WANG SUNING,期刊：Organic Letters, 页码：5610-5613 , 文章类型： Article，,卷期：2012年14-21] Triplet acceptors such as naphthalene, pyrene, and anthracene have been found to be highly effective in controlling the photoisomerization efficiency of N,C-chelate boryl chromophores, establishing the involvement of a p... Cyclopropane Compatibility with Oxidative Carbocation Formation: Total Synthesis of Clavosolide A [作者：PEH GUANGRONG; FLOREANCIG PAUL E,期刊：Organic Letters, 页码：5614-5617 , 文章类型： Article，,卷期：2012年14-21] Cyclopropane-substituted allylic ethers react with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone to form oxocarbenium ions with no competitive ring cleavage. This reaction can be used for the preparation of cyclopropane-subs... Substitution of the Nitro Group with Grignard Reagents: Facile Arylation and Alkenylation of Pyridine N-Oxides [作者：ZHANG FANG; ZHANG SONG; DUAN XINFANG,期刊：Organic Letters, 页码：5618-5620 , 文章类型： Article，,卷期：2012年14-21] The unprecedented substitution of a nitro group with aryl or alkenyl groups of Grignard reagents affords 2-aryl or alkenylpyridine N-oxides in modest to high yields with high chemoselectivity. This protocol allows a simp... Cu(II)-Catalyzed Synthesis of Naphthalene-1,3-diamine Derivatives from Haloalkynes and Amines [作者：CHEN ZHENGWANG; ZENG WEI; JIANG HUANFENG; LIU LIANGXIAN,期刊：Organic Letters, 页码：5385-5387 , 文章类型： Article，,卷期：2012年14-21] An efficient procedure for the preparation of naphthalene-1,3-diamine derivatives by copper-catalyzed haloalkynes with amines has been reported. The reaction was supposed to proceed through a coupling reaction followed b... A Torquoselective 6 pi Electrocyclization Approach to Reserpine Alkaloids [作者：BARCAN GREGG A; PATEL ASHAY; HOUK K N; KWON OHYUN,期刊：Organic Letters, 页码：5388-5391 , 文章类型： Article，,卷期：2012年14-21] A highly torquoselective thermal triene 6 pi electrocyclization controls the relative stereochemistry between the C3 and C18 stereocenters of the dodecahydroindolo[2,3-a]benzo[g]quinolizine skeleton of reserpine-type alk... Synthesis of Indenes via Bronsted Acid Catalyzed Cyclization of Diaryl- and Alkyl Aryl-1,3-dienes [作者：EOM DAHAN; PARK SANGJUNE; PARK YOUNGCHUL; RYU TAEKYU; LEE PHIL HO,期刊：Organic Letters, 页码：5392-5395 , 文章类型： Article，,卷期：2012年14-21] Substituted indenes can be synthesized via the Bronsted acid catalyzed cyclization of diaryl- and alkyl aryl-1,3-dienes. In this approach, treatment of symmetric or unsymmetric diaryl- and alkyl aryl-1,3-dienes with a ca... Structure of FD-895 Revealed through Total Synthesis [作者：VILLA REYMUNDO; MANDEL ALEXANDER L; JONES BRIAN D; LA CLAIR JAMES J; BURKART MICHAEL D,期刊：Organic Letters, 页码：5396-5399 , 文章类型： Article，,卷期：2012年14-21] The total synthesis of FD-895 was completed through a strategy that featured the use of a tandem esterification ring-closing metathesis (RCM) process to construct the 12-membered macrolide and a modified Stille coupling ... Chichibabin-Type Direct Alkylation of Pyridyl Alcohols with Alkyl Lithium Reagents [作者：JEFFREY JENNA L; SARPONG RICHMOND,期刊：Organic Letters, 页码：5400-5403 , 文章类型： Article，,卷期：2012年14-21] Direct C(6) alkylation of pyridyl alcohols can be achieved following an initial deprotonation of the hydroxy group. This transformation, which is believed to occur by a Chichibabin-type alkylation, avoids lateral deproto... A Synthetic Receptor for Nicotine from a Dynamic Combinatorial Library [作者：HAMIEH SALEH; LUDLOW R FREDERICK; PERRAUD OLIVIER; WEST KEVIN R; MATTIA ELIO; OTTO SIJBREN,期刊：Organic Letters, 页码：5404-5407 , 文章类型： Article，,卷期：2012年14-21] Designing synthetic receptors that bind biologically relevant guests in an aqueous solution remains a considerable challenge. We now report a new synthetic receptor for nicotine, selected from a dynamic combinatorial lib... Two-Step Synthesis of 2,3-Dihydropyrroles via a Formal 5-endo Cycloisomerization of Ugi 4-CR/Propargyl Adducts [作者：POLINDARAGARCIA LUIS A; MIRANDA LUIS D,期刊：Organic Letters, 页码：5408-5411 , 文章类型： Article，,卷期：2012年14-21] A practical two-step synthesis of 2,3-dihydropyrroles from Ugi 4-CR/propargyl adducts is presented. The protocol includes a base-mediated formation of an allenamide functional group and an in situ metal-free formal 5-end... Highly Enantioselective Addition of Enals to Isatin-Derived Ketimines Catalyzed by N-Heterocyclic Carbenes: Synthesis of Spirocyclic gamma-Lactams [作者：LV HUI; TIWARI BHOOPENDRA; MO JUNMING; XING CHONG; CHI YONGGUI ROBIN,期刊：Organic Letters, 页码：5412-5415 , 文章类型： Article，,卷期：2012年14-21] An N-heterocyclic carbene (NHC)-catalyzed annulation reaction of isatin N-Boc ketimines and enals is developed for the synthesis of spirocyclic oxindole-gamma-lactams bearing one quaternary chiral center in good yields a... Ag(I)-Catalyzed Aminofluorination of Alkynes: Efficient Synthesis of 4-Fluoroisoquinolines and 4-Fluoropyrrolo[alpha]isoquinolines [作者：XU TAO; LIU GUOSHENG,期刊：Organic Letters, 页码：5416-5419 , 文章类型： Article，,卷期：2012年14-21] A silver-catalyzed intramolecular oxidative aminofluorination of alkynes has been developed by using NFSI as a fluorinating reagent. This reaction represents an efficient method for the synthesis of various 4-fluoroisoqu...