- Highly Enantioselective Sequential Hydrogenation of Ethyl 2-Oxo-4-arylbut-3-enoate to Ethyl 2-Hydroxy-4-arylbutyrate.
[作者:Meng, Qinghua;Zhu, Lufeng;Zhang, Zhaoguo;,期刊:Journal of Organic Chemistry, 页码:7209-7212 , 文章类型: 研究论文,,卷期:2008年73-18]
- [NH2Me2]+[{RuCl[(S)-SunPhos]}2(m-Cl3)] gave Et 2-hydroxy-4-arylbutyrate, e.g., I, with 94-96% ee. Further investigation has proved that the hydrogenation proceeded via a sequential hydrogenation of C=O and C=C bonds, wh...
- Chemoselective deprotection of cyclic N,O-aminals using catalytic bismuth(III) bromide in acetonitrile. [Erratum to document cited in CA143:007400].
[作者:Xin, Cong;Hu, Fang;Liu, Ke-Gang;Liao, Qing-Jiang;Yao, Zhu-Jun;,期刊:Journal of Organic Chemistry, 页码:7440-7440 , 文章类型: 研究论文,,卷期:2008年73-18]
- On pages 4514 and 4515, Refs. 5c, 6, 7, 8, 9a, 10, 11, 12, 13, and 14 are incorrect; the correct versions of the refs. are given.
- A meta effect in nonphotochemical processes: The homolytic chemistry of m-methoxyphenol. [Erratum to document cited in CA148:331250].
[作者:Foti, Mario C.;Daquino, Carmelo;DiLabio, Gino A.;Ingold, K. U.;,期刊:Journal of Organic Chemistry, 页码:7440-7440 , 文章类型: 研究论文,,卷期:2008年73-18]
- On pages 2408 and 2411, the resonance structures for 1, i.e., 1a to le, in the abstr. and text are incorrect; the correct versions of the structures are given.
- Facile Synthesis of Structurally Diverse 3,3'-Disubstituted 1,1'-Binaphthyl-2,2'-diamines in Optically Pure Forms.
[作者:Kano, Taichi;Tanaka, Youhei;Osawa, Kenta;Yurino, Taiga;Maruoka, Keiji;,期刊:Journal of Organic Chemistry, 页码:7387-7389 , 文章类型: 研究论文,,卷期:2008年73-18]
- A synthetic route to 3,3'-dihalo BINAMs based on the direct halogenation of H8-BINAM and subsequent rearomatization to the binaphthyl core has been developed. The combination of this procedure and Pd-catalyzed coupling ...
- One-pot Negishi cross-coupling reactions of in situ generated zinc reagents with aryl chlorides, bromides, and triflates.
[作者:Sase, Shohei;Jaric, Milica;Metzger, Albrecht;Malakhov, Vladimir;Knochel, Paul;,期刊:Journal of Organic Chemistry, 页码:7380-7382 , 文章类型: 研究论文,,卷期:2008年73-18]
- 27 In situ generated aryl, heteroaryl, alkyl, or benzylic polyfunctional zinc reagents obtained by the addn. of zinc and LiCl to the corresponding org. iodides undergo smooth Pd(0)-catalyzed cross-coupling reactions with...
- Catalytic Asymmetric Nitroaldol (Henry) Reaction with a Zinc-Fam Catalyst.
[作者:Bulut, Adnan;Aslan, Ayhan;Dogan, Ozdemir;,期刊:Journal of Organic Chemistry, 页码:7373-7375 , 文章类型: 研究论文,,卷期:2008年73-18]
- Ferrocenyl-substituted aziridinylmethanol (Fam-1) was used as a catalyst with zinc for the asym. nitro aldol (Henry) reaction. This catalyst worked with a variety of aldehydes (arom., aliph., a,b-unsatd., and heteroarom...
- Cyclobutanone Mimics of Penicillins: Effects of Substitution on Conformation and Hemiketal Stability.
[作者:Johnson, Jarrod W.;Evanoff, Darryl P.;Savard, Marc E.;Lange, Gerald;Ramadhar, Timothy R.;Assoud, Abdeljalil;Taylor, Nicholas J.;Dmitrienko, Gary I.;,期刊:Journal of Organic Chemistry, 页码:6970-6982 , 文章类型: 研究论文,,卷期:2008年73-18]
- The tendency for carbocyclic analogs of penicillins to undergo hydrate and hemiketal formation is central to their ability to function as b-lactamase inhibitors. 2-Thiabicyclo[3.2.0]heptan-6-one-4-carboxylates with alkox...
- Nucleophilicity and Leaving-Group Ability in Frontside and Backside SN2 Reactions.
[作者:Bento, A. Patricia;Bickelhaupt, F. Matthias;,期刊:Journal of Organic Chemistry, 页码:7290-7299 , 文章类型: 研究论文,,卷期:2008年73-18]
- Nucleophilic substitution is ubiquitous in chem. and well studied. Nucleophilicity and leaving-group ability have been related to various reactant properties, such as electronegativity, size, polarizability, and others. ...
- Planar Tetracoordinate Carbons in Cyclic Semisaturated Hydrocarbons.
[作者:Perez-Peralta, Nancy;Sanchez, Mario;Martin-Polo, Jesus;Islas, Rafael;Vela, Alberto;Merino, Gabriel;,期刊:Journal of Organic Chemistry, 页码:7037-7044 , 文章类型: 研究论文,,卷期:2008年73-18]
- A series of planar tetracoordinate carbon mols. in cyclic semisatd. hydrocarbons resulting from the combination of the C52- skeleton with satd. hydrocarbon fragments is reported. The electronic stabilization and the bon...
- A General, Iterative, and Modular Approach toward Carbohydrate Libraries Based on Ruthenium-Catalyzed Oxidative Cyclizations.
[作者:Niggemann, Meike;Jelonek, Andreas;Biber, Nicole;Wuchrer, Margarita;Plietker, Bernd;,期刊:Journal of Organic Chemistry, 页码:7028-7036 , 文章类型: 研究论文,,卷期:2008年73-18]
- Carbohydrates are an omnipresent class of highly oxygenated natural products. Due to their wide spectra of biol. activities, they have been in the center of synthetic org. chem. for more than 130 years. During the past...
- Solid-Phase Organic Synthesis of Polyisoprenoid Alcohols with Traceless Sulfone Linker.
[作者:Chang, Yi-Fan;Liu, Chen-Yu;Guo, Chih-Wei;Wang, Yen-Chih;Fang, Jim-Min;Cheng, Wei-Chieh;,期刊:Journal of Organic Chemistry, 页码:7197-7203 , 文章类型: 研究论文,,卷期:2008年73-18]
- Solid-phase org. synthesis of polyprenols with a traceless sulfone linker is described. The polymer-bound benzenesulfinate is first linked with the "tail" building blocks of isoprenyl chlorides via S-alkylation. With u...
- Efficient Access to 2-Isobetulinic Acid, 2-Isooleanolic Acid, and 2-Isoursolic Acid.
[作者:Hao, Jia;Zhang, Pu;Wen, Xiaoan;Sun, Hongbin;,期刊:Journal of Organic Chemistry, 页码:7405-7408 , 文章类型: 研究论文,,卷期:2008年73-18]
- An efficient access to 2-isobetulin (I, R=CH2OH), 2-isobetulinic acid (I,R=COOH), 2-isooleanolic acid (II, R1=H, R2=Me), and 2-isoursolic acid (II, R1=Me, R2=H) has been developed. The key step is a novel one-pot conver...
- Synthesis of Fused Piperidinones through a Radical-Ionic Cascade.
[作者:Godineau, Edouard;Schenk, Kurt;Landais, Yannick;,期刊:Journal of Organic Chemistry, 页码:6983-6993 , 文章类型: 研究论文,,卷期:2008年73-18]
- Azabicyclo[4.3.0]nonanes, e.g. I (R1 = H, Me, t-Bu, SiMe2Ph; R2 = H, Me, OAc, CO2Me), were assembled from chiral allylsilanes possessing an oxime moiety, e.g. II, using a stereocontrolled formal [2 + 2 + 2] radical-ionic...
- Unexpected Solvent-Free Cycloadditions of 1,3-Cyclohexanediones to 1-(Pyridin-2-yl)-enones Mediated by Manganese(III) Acetate in a Ball Mill.
[作者:Wang, Guan-Wu;Dong, Ya-Wei;Wu, Ping;Yuan, Ting-Ting;Shen, Ye-Bing;,期刊:Journal of Organic Chemistry, 页码:7088-7095 , 文章类型: 研究论文,,卷期:2008年73-18]
- Under solvent-free ball-milling conditions, manganese(III) acetate dihydrate-mediated cycloaddns. of 5,5-dimethyl-1,3-cyclohexanedione and 1,3-cyclohexanedione to various 1-(pyridin-2-yl)-enones proceeded efficiently to ...
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