標(biāo)題: Titlebook: Selectivities in Lewis Acid Promoted Reactions; Dieter Schinzer Book 1989 Kluwer Academic Publishers 1989 Ene reaction.Rearrangement.natur [打印本頁] 作者: 郊區(qū) 時間: 2025-3-21 16:28
書目名稱Selectivities in Lewis Acid Promoted Reactions影響因子(影響力)
書目名稱Selectivities in Lewis Acid Promoted Reactions影響因子(影響力)學(xué)科排名
書目名稱Selectivities in Lewis Acid Promoted Reactions網(wǎng)絡(luò)公開度
書目名稱Selectivities in Lewis Acid Promoted Reactions網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱Selectivities in Lewis Acid Promoted Reactions被引頻次
書目名稱Selectivities in Lewis Acid Promoted Reactions被引頻次學(xué)科排名
書目名稱Selectivities in Lewis Acid Promoted Reactions年度引用
書目名稱Selectivities in Lewis Acid Promoted Reactions年度引用學(xué)科排名
書目名稱Selectivities in Lewis Acid Promoted Reactions讀者反饋
書目名稱Selectivities in Lewis Acid Promoted Reactions讀者反饋學(xué)科排名
作者: Vasoconstrictor 時間: 2025-3-21 22:33 作者: 協(xié)奏曲 時間: 2025-3-22 00:33
Cationic Cyclization Reactions Terminated by Pinacol Rearrangements,tegy in organic synthesis. [1] Much of the recent progress in this area stems from the development of selective electrophilic functionality for . the cyclization and complimentary nucleophilic functionality for cyclization .. Illustrative examples would be the widely employed acetal cyclization init作者: ALB 時間: 2025-3-22 08:20 作者: heterogeneous 時間: 2025-3-22 11:58 作者: 獨特性 時間: 2025-3-22 12:54 作者: Bravado 時間: 2025-3-22 19:04
Mechanistic Variability in the Lewis Acid-Promoted Reactions of Aldehydes with Organostannanes,py. Using this technique, all processes involved in a rather complex manifold of reactions can be observed at low temperature. These three substrates span the range of possible behavior upon complexation with SnCl. at 1:1 stoichiometry: 2-methyl-3-benzyloxypropanal is a “strong chelator”, 3-benzylox作者: 細查 時間: 2025-3-23 00:51
Synthetic and Mechanistic Studies of Lewis Acid Mediated C-C-Bond Formation,e LUMO of the carbonyl function, activating the molecule toward nucleophilic additions of enolsilanes, allylsilanes, R.Zn and Me.SiCN. The latter additions occur stereoselectively with chelation control. The sense of diastereoselectivity can be reversed using metal and protective group tuning. Group作者: 忍耐 時間: 2025-3-23 01:30
Acylation of Alkenes and Allylsilanes,chlorides giving divinylketones which undergo the Nazarov cyclization to afford pentalenones or cyclopentenones. The acylation of alkenes by ., γ-ethylenic acyl chlorides gives cyclohexenone moieties. Applications afford a synthetic route to tricyclic carbon compounds (des-A-11-oxo or des-D-7-oxo st作者: Sarcoma 時間: 2025-3-23 08:03
Lewis Acid-Catalyzed Stereoselection on Carbohydrate Templates,hydrates are investigated as the chiral auxiliaries in alkylation reactions and in Michael additions of ester enolates. Furthermore, carbohydrates are demonstrated to be efficient chiral matrices in Lewis acid-catalyzed Diels-Alder reactions. They also effect stereoselection in a new synthesis of β-作者: CEDE 時間: 2025-3-23 10:35
Lewis Acid Character and Selective Reactions of Penta-Coordinate Silicon Compounds,selective reactions useful for organic synthesis. Accordingly, new reduction of carbonyl compounds with pentacoordinate hydridosilicates, new regio- and enantioselective allylation of aldehydes with pentacoordinate allylsilanes, and the new cleavage reaction of C-Si bonds are discussed. In these rea作者: 同謀 時間: 2025-3-23 16:05 作者: 我吃花盤旋 時間: 2025-3-23 20:53 作者: 鍍金 時間: 2025-3-24 01:21 作者: 難管 時間: 2025-3-24 02:32
1389-2185 8 was held to bring some light into the darkness of Lewis acid induced processes. As such the workshop reflects some current trends in organic synthesis, where Lewis acids are becoming a powerful tool in many different modern reactions, e.g. Diels-Alder reactions, Ene reactions, Sakurai reactions, a作者: blithe 時間: 2025-3-24 06:53 作者: Optimum 時間: 2025-3-24 11:58 作者: Blood-Clot 時間: 2025-3-24 15:35
New Reactions of Ketene Silyl Acetals with Imines Promoted by Titanium(IV) and Zirconium(IV) Chloriedominant product through . addition. Mechanisms which can accommodate the observed substantial substituent effects on product distribution and the clear differences in reactivity between TiCl. and ZrCl. are proposed.作者: Preserve 時間: 2025-3-24 22:19 作者: champaign 時間: 2025-3-25 01:51
Book 1989 to bring some light into the darkness of Lewis acid induced processes. As such the workshop reflects some current trends in organic synthesis, where Lewis acids are becoming a powerful tool in many different modern reactions, e.g. Diels-Alder reactions, Ene reactions, Sakurai reactions, and in gene作者: 動脈 時間: 2025-3-25 03:47
Synthetic and Mechanistic Studies of Lewis Acid Mediated C-C-Bond Formation,tions occur stereoselectively with chelation control. The sense of diastereoselectivity can be reversed using metal and protective group tuning. Group transfer polymerization of acrylates can be induced by Znl. using RSSiMe. as initiators.作者: patella 時間: 2025-3-25 07:45
Lewis Acid Character and Selective Reactions of Penta-Coordinate Silicon Compounds,nd enantioselective allylation of aldehydes with pentacoordinate allylsilanes, and the new cleavage reaction of C-Si bonds are discussed. In these reactions, it is demonstrated that unique characters of pentacoordinate silicon species as a Lewis acid play an important role.作者: ABOUT 時間: 2025-3-25 15:25 作者: MANIA 時間: 2025-3-25 18:58
Maurice Santelli,Ariette Tubul,Christophe Morel-Fourrieron of a problem and obtaining the differential equations of perturbed motion to complete analysis and recommendations. About one fourth of the examples are from978-1-4612-8477-2978-1-4612-4046-4Series ISSN 0939-2475 Series E-ISSN 2196-9949 作者: 英寸 時間: 2025-3-25 23:13 作者: 破譯密碼 時間: 2025-3-26 02:57 作者: Epidural-Space 時間: 2025-3-26 07:46 作者: 打谷工具 時間: 2025-3-26 11:24 作者: LATER 時間: 2025-3-26 12:58
G. E. Keck,S. Castellino,M. B. Andrusates of matter, and to explain the theoretical methods that are used to model the phenomena. It concludes with a chapter on liquid crystals, which brings together all of these physical and mathematical concepts. The book is accompanied online by a set of “interactive figures”—some allow readers to c作者: dry-eye 時間: 2025-3-26 17:03 作者: Implicit 時間: 2025-3-26 22:34 作者: corpuscle 時間: 2025-3-27 02:53 作者: 易于 時間: 2025-3-27 07:07
Hideki Sakuraiven class of right-hand sides, then the domain of values of the operators is kept fixed, while the operator itself and its domain of definition are subject to a certain extension. The “new” operator with closed image, as well and the procedure for constructing it, are called a . of the operator ..作者: 嚴(yán)厲批評 時間: 2025-3-27 12:10 作者: Hemiparesis 時間: 2025-3-27 15:22 作者: 路標(biāo) 時間: 2025-3-27 19:00
Ian Fleming,Dick Higgins,Achintya K. Sarkarrately than has hitherto been the case. 3. The book deals with traffic flow on links between nodes, and not at nodes themselves. Many readers will probably regret this, since nodes are usually the bottlenecks which limit the capacity of the road network. A book dedicated to the node would be the obv作者: 古代 時間: 2025-3-27 23:46 作者: 遺忘 時間: 2025-3-28 05:27
Corinne Aubert,Jean-Pierre Bégué,Danièle Bonnet-Delpon,Dany Mesureurion and its variations, the method of configuration interaction (Sec. 2.2), stationary perturbation theory (Sec. 2.3), and the method that takes into account the interaction between a discrete state and a continuum, which is extremely important for highly excited states (Sec. 2.4). The various corre作者: correspondent 時間: 2025-3-28 09:49 作者: fibula 時間: 2025-3-28 10:40 作者: expound 時間: 2025-3-28 15:28
Stereoselective Synthesis with Silyl Ketene Acetals and TiCl4, α-iminoesters). When both the enolsilane and the electrophile are chiral, the inherent diastereoface preferences of the two reactants may reinforce one another (matched pair) or oppose one another (mismatched pair). If the chiral enolsilane shows sufficiently high diastereoface preference, it can c作者: 蛙鳴聲 時間: 2025-3-28 20:39
Mechanistic Variability in the Lewis Acid-Promoted Reactions of Aldehydes with Organostannanes,ms. The mechanism of addition reactions with the substrates is determined primarily by complex stability (which is temperature dependent), stoichiometry, and the presence or absence of free SnCl.. The involvement of transmetalation pathways leading to the production of allyltrichlorostannane or dial作者: heterogeneous 時間: 2025-3-29 01:39
Studies on the Mechanism of Allylmetal-Acetal Additions,t the model dimethyl acetal does not react with TMSOTf via an oxocarbenium ion. As in classic nucleophilic aliphatic substitution, stereochemistry is used as a probe for differentiating S.1 and S.2 mechanisms in acetal reactions as well.作者: ADORN 時間: 2025-3-29 04:10
Book 1989d the contributions of 15 posters. I am confident that the material presented in this book will stimulate the chemistry, which has been discussed on our meeting, around the world. The meeting and the book were only possible through a grant of the NATO Scientific Affairs Devision and financial suppor作者: scrape 時間: 2025-3-29 07:19
Nato Science Series C:http://image.papertrans.cn/s/image/864333.jpg作者: SLAG 時間: 2025-3-29 15:18 作者: 啜泣 時間: 2025-3-29 19:28 作者: adhesive 時間: 2025-3-29 20:26
Intramolecular Additions of Allylsilanes to Conjugated Dienones,The intramolecular addition of an allylsilane to a 3-vinylcycloalkenone represents a powerful means of constructing a wide range of functionalized bi- and tricyclic ring systems.作者: Offbeat 時間: 2025-3-30 00:29 作者: Ischemia 時間: 2025-3-30 07:31
,Access to Trifluoromethyl Indans by Cycloalkylation of β-Aryl Trifluoromethyl-Ketones,The cyclization with Levis acid of β-aryl trifluoromethyl ketones leads to trifluoromethyl indans. According to Lewis acid and solvent, X is OH, Cl, H, C.H. group.作者: 血統(tǒng) 時間: 2025-3-30 09:36
A Route to Aliphatic Cycles Bearing a CF3 Group,Lewis acid induced intramolecular cyclizations from ω-ethylenic trifluoromethyl-ketones is an attractive method for the synthesis of functionalized alicyclic compounds.作者: 討好美人 時間: 2025-3-30 15:41
,Lewis Acid Promoted Synthesis of β-Lactams,A selection of recent results will be presented on a synthesis of monocyclic β-lactams, a synthesis based on the Lewis acid promoted reaction between silyl ketene acetals and .-silyl imines. Attention will be focussed on aspects of stereocontrol in the preparation of .-protio β-lactams possessing a variety of usefully functionalised structures.作者: ETCH 時間: 2025-3-30 19:22 作者: 微枝末節(jié) 時間: 2025-3-30 22:42 作者: 1分開 時間: 2025-3-31 03:12 作者: 稱贊 時間: 2025-3-31 05:37 作者: terazosin 時間: 2025-3-31 10:21 作者: 食物 時間: 2025-3-31 16:56
G. E. Keck,S. Castellino,M. B. Andruso theoretical physics as applied to soft matter, explaining the concepts of symmetry, broken symmetry, and order parameters; phases and phase transitions; mean-field theory; and the mathematics of variational calculus and tensors. It is written in an informal, conversational style, which is accessib作者: Transfusion 時間: 2025-3-31 17:54 作者: cancer 時間: 2025-4-1 00:40
Maurice Santelli,Ariette Tubul,Christophe Morel-Fourriergraphs, with each one devoted to a separate complicated issue of the theory. Generally, the examples included in such books are very interesting from the point of view of mathematics, without necessarily having much practical value. Usually, they are written using complicated mathematical language, 作者: 偽證 時間: 2025-4-1 04:48
Barry B. Snidereared in the Brandeis Lectures Notes.Is authored by the winn.The book is a reproduction of a course of lectures delivered by the author in 1983-84 which appeared in the Brandeis Lecture Notes series. The aim of this course was to give an introduction to the series of papers by concentrating on the c作者: Decline 時間: 2025-4-1 09:59 作者: 北極熊 時間: 2025-4-1 12:38
Horst Kunzt a triplet (correspondence rule, domain of definition, domain of values), its properties depend in an essential manner on each of the components of the triplet and there are reasons to hope that by appropriately perturbing these components one can achieve that the image of the “new” (perturbed) ope作者: 預(yù)測 時間: 2025-4-1 16:28 作者: Limerick 時間: 2025-4-1 19:34 作者: 有惡意 時間: 2025-4-2 02:14
Scott E. Denmark,Timothy M. Wilsonndings, some preliminary remarks are called for. 1. This is intended to be a textbook. It brings together methods and approaches that are widely distributed throughout the literature and that are therefore difficult to assess. Text citations of sources have been avoided; literature references are li作者: 不能和解 時間: 2025-4-2 06:06 作者: 指令 時間: 2025-4-2 08:48
