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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   Highly Efficient One-Pot Access to Functionalized Arylboronic Acids via Noncryogenic Bromine/Magnesium Exchanges [作者：LEERMANN TIMO; LEROUX FREDERIC R; COLOBERT FRANCOISE,期刊：Organic Letters, 页码：4479-4481 , 文章类型： Article，,卷期：2011年13-17] A general and convenient protocol for the electrophilic borylation of aryl Grignard reagents prepared from arylbromides by direct insertion of magnesium in the presence of LiCl or by Mg/Br exchange with (l)PrMgCl center ... Synthesis and Structural Investigations of Functionalizable Hybrid beta-Hairpin [作者：BANDYOPADHYAY ANUPAM; MALI SACHITANAND M; LUNAWAT POOJA; RAJA K MURUGA POOPATHI; GOPI HOSAHUDYA N,期刊：Organic Letters, 页码：4482-4485 , 文章类型： Article，,卷期：2011年13-17] The solution and solid state conformations of a designed beta-hairpin containing functionalizable alpha,beta-unsaturated gamma-amino acids at the antiparallel beta-strands and a single step transformation to its saturate... A Concise Synthetic Approach to the Sorbicillactones: Total Synthesis of Sorbicillactone A and 9-epi-Sorbicillactone A [作者：VOLP KELLY A; JOHNSON DIANE M; HARNED ANDREW M,期刊：Organic Letters, 页码：4486-4489 , 文章类型： Article，,卷期：2011年13-17] A concise (12 step) total synthesis of sorbicillactone A and 9-epi-sorbicillactone A is reported. Unlike typical routes to the sorbicillinoids, this strategy does not start from sorbicillin and allows for the production ... Direct Synthesis of Chiral 1,2,3,4-Tetrahydropyrrolo[1,2-a]pyrazines via a Catalytic Asymmetric Intramolecular Aza-Friedel-Crafts Reaction [作者：HE YUWEI; LIN MAOHUI; LI ZHONGMIN; LIANG XINTING; LI GUILONG; ANTILLA JON C,期刊：Organic Letters, 页码：4490-4493 , 文章类型： Article，,卷期：2011年13-17] The direct asymmetric intramolecular aza-Friedel-Crafts reaction of N-aminoethylpyrroles with aldehydes catalyzed by a chiral phosphoric acid represents the first efficient method for the preparation of medicinally inter... A Concise Approach to the Dalesconol Skeleton [作者：FAN YUKAI; FENG PENGJU; LIU MAO; PAN HONGJIE; SHI YIAN,期刊：Organic Letters, 页码：4494-4497 , 文章类型： Article，,卷期：2011年13-17] A rapid approach to the skeleton of dalesconol A and B, unprecedented immunosuppressants, has been achieved through a convergent strategy featuring a carbocation-mediated dearomatization-cyclization and a following one-p... An Efficient Difluorohydroxylation of Indoles Using Selectfluor as a Fluorinating Reagent [作者：LIN RIYUAN; DING SHENGTAO; SHI ZHUANGZHI; JIAO NING,期刊：Organic Letters, 页码：4498-4501 , 文章类型： Article，,卷期：2011年13-17] An efficient difluorohydroxylation of substituted indoles leading to 3,3-difluoroindolin-2-ols with good yields by using Selectfluor as the electrophilic fluorinating reagent has been developed. In this methodology, the ... [4]Pseudorotaxanes with Remarkable Self-Sorting Selectivities [作者：JIANG WEI; SATTLER DOMINIK; RISSANEN KARI; SCHALLEY CHRISTOPH A,期刊：Organic Letters, 页码：4502-4505 , 文章类型： Article，,卷期：2011年13-17] The synthesis and characterization of several self-assembled [4]pseudorotaxanes is reported, some of which form in a programmed way based on two similar yet orthogonal crown ether/secondary ammonium ion binding motifs. A... Saddle Shaped Hexaaryl[a,c,fg,j,l,op]tetracenes from 4,5,9,10-Tetrafunctionalized Pyrenes [作者：ZOEPHEL LUKAS; ENKELMANN VOLKER; RIEGER RALPH; MUELLEN KLAUS,期刊：Organic Letters, 页码：4506-4509 , 文章类型： Article，,卷期：2011年13-17] A new K-region functionalized pyrene is presented which was used as a building block for the straightforward synthesis of hexaaryl[a,c,fg,j,l, op]tetracene via fourfold Stille coupling and subsequent cyclodehydrogenation... A New Half-Condensed Schiff Base Compound: Highly Selective and Sensitive pH-Responsive Fluorescent Sensor [作者：SAHA UDAY CHAND; DHARA KOUSHIK; CHATTOPADHYAY BASAB; MANDAL SUSHIL KUMAR; MONDAL SWASTIK; SEN SUPRITI; MUKHERJEE MONIKA; VAN SMAALEN SANDER; CHATTOPADHYAY PABITRA,期刊：Organic Letters, 页码：4510-4513 , 文章类型： Article，,卷期：2011年13-17] A new probe, 3-[(3-benzyloxypyridin-2-ylimino)methyl]-2-hydroxy-5-methylbenzaldehyde (1-H) behaves as a highly selective fluorescent pH sensor in a Britton-Robinson buffer at 25 degrees C. The pH titrations show a 250-fo... Copper-Catalyzed Synthesis of Quinoxalines with o-Phenylenediamine and Terminal Alkyne in the Presence of Bases [作者：WANG WEN; SHEN YONGWEN; MENG XU; ZHAO MINGMING; CHEN YONGXIN; CHEN BAOHUA,期刊：Organic Letters, 页码：4514-4517 , 文章类型： Article，,卷期：2011年13-17] A novel way of synthesizing quinoxalines efficiently through cyclization of o-phenylenediamine and terminal alkyne by Cu(II) and bases is developed. This reaction proceeds smoothly to give the products in moderate to goo... Enzymatic Timing and Tailoring of Macrolactamization in Syringolin Biosynthesis [作者：WUEST WILLIAM M; KRAHN DANIEL; KAISER MARKUS; WALSH CHRISTOPHER T,期刊：Organic Letters, 页码：4518-4521 , 文章类型： Article，,卷期：2011年13-17] The enzymatic activation of 3,4-dehydrolysine and subsequent formation of the 12-membered syringolin macrolactam were investigated. The timing of the desaturation was elucidated through the analysis of the initial adenyl... Efficient Multigram Synthesis of the Repeating Unit of Gallic Acid-Triethylene Glycol Dendrimers [作者：AMARAL SANDRA P; FERNANDEZVILLAMARIN MARCOS; CORREA JUAN; RIGUERA RICARDO; FERNANDEZMEGIA EDUARDO,期刊：Organic Letters, 页码：4522-4525 , 文章类型： Article，,卷期：2011年13-17] A multigram synthesis of the repeating unit of GATG (gallic acid-triethylene glycol) dendrimers is described through an efficient and cost-effective route. These conditions overcome major problems precluding scaling up a... Synthesis of gamma-Benzopyranone by TfOH-Promoted Regioselective Cyclization of o-Alkynoylphenols [作者：YOSHIDA MASAHITO; FUJINO YUTA; DOI TAKAYUKI,期刊：Organic Letters, 页码：4526-4529 , 文章类型： Article，,卷期：2011年13-17] Regioselective cyclization of o-alkynoylphenols forming gamma-benzopyranones has been demonstrated. Trifluoromethanesulfonic acid (TfOH) induced 6-endo cyclization of o-alkynoylphenols without forming 5-exo cyclized benz... The Total Synthesis of Immunostimulant alpha-Galactosylceramides from Naturally Configured alpha-Galactoside Raffinose [作者：ZHANG ZHENXING; ZHAO WEI; WANG BIN; XIA CHENGFENG; ZHANG WENPENG; WANG PENG GEORGE,期刊：Organic Letters, 页码：4530-4533 , 文章类型： Article，,卷期：2011年13-17] The total synthesis of absolute anomeric confirmation alpha-galactosylceramide analogues from raffinose is described. Using the naturally occurring alpha-galactoside raffinose as the starting material, the easily maneuve... Synthesis of Optically Pure vic-Sulfanyl Amines Mediated by a Remote Sulfinyl Group [作者：ARROYO YOLANDA; ASCENSION SANZTEJEDOR M; ALONSO INES; GARCIARUANO JOSE L,期刊：Organic Letters, 页码：4534-4537 , 文章类型： Article，,卷期：2011年13-17] Enantiomerically pure syn-1,2-diaryl-1,2-sulfanylamine derivatives can be obtained in a completely stereoselective manner by reaction of the benzylcarbanion Li-(S)-1 with N-phenyl (or PMP)-arylidene aldimines and further... Assignment and Stereocontrol of Hibarimicin Atropoisomers [作者：ROMAINE IAN M; HEMPEL JONATHAN E; SHANMUGAM GANESH; HORI HIROSHI; IGARASHI YASUHIRO; POLAVARAPU PRASAD L; SULIKOWSKI GARY A,期刊：Organic Letters, 页码：4538-4541 , 文章类型： Article，,卷期：2011年13-17] A stereochemical feature of the hibarimicins is a central biaryl (HMP-Y6) or aryl-quinone (hibarimicinone) incorporated as a single atropodiastereomer. Herein, a chiral resolution and deracemization process to access opt...