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40
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84990084279
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Diplomarbeit, Universität Marburg 1987.
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Zarges, W.1
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47
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84990123195
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2 and 3
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(a) Reviews:, Academic Press, New York, Chap.,. It is always a pleasure to read this early review on the structure of acceptor‐substituted “carbanions” with its many insights mostly received from H/D exchange reactions
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(1965)
Fundamentals of Carbanion Chemistry
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Cram, D.J.1
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57
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0006678875
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An excellent review of “Sulfur–Containing Carbanion and Related Species” is given by, in F. Bernardi, I. G. Csizmadia, A. Mangini (Eds.)
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(1985)
Stud. Org. Chem. (Amsterdam)
, vol.19
, pp. 133
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Wolfe, S.1
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62
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84990123491
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3C] 4⊖+ was carried out at quite an early date:, Dissertation, University of Groningen 1957
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Hoogsteen, K.1
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69
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84990149026
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⊕ion by heteroatoms of the acceptor substituent, and of the lower electron density at the benzylic, anionic C atom.
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71
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0001433663
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Kristallstruktur von 2-Lithio-2-phenyl-1,3-dithian-Tetrahydrofuran-Tetramethylethylendiamin (1/1/1); ”X – X„-Elektronendichteverteilung in Lithio-methyl-und Lithio-phenyl-dithian
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(1981)
Angewandte Chemie
, vol.93
, pp. 487
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Amstutz, R.1
Dunitz, J.D.2
Seebach, D.3
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74
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84990146284
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Cambridge Crystallographic Data Base (updating 7/84), Cambridge Crystallographic Data Center, University Chemical Laboratory, Cambridge, England.
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-
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85
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84990112909
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-
(a) In order to determine theγ value, it was assumed that the lone pair of electrons at C, lies on the bisector of angle α + β. The angle γ is then the torsion angle between this bisector and the substituent R on the S atom; (b) the conformation of the trimethylsilyl compound 19 is possibly brought about by an attractive interaction between the Si and O atoms.
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93
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84990080962
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Important literature dealing with this topic is summarized in [36e].
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94
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84985135610
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Structure, Synthesis, and Properties of Some Persubstituted 1,2-Dintroethanes. In Quest of Nitrocyclopropyl-Anion Derivatives
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(1982)
Helvetica Chimica Acta
, vol.65
, pp. 137
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Kai, J.1
Knochel, P.2
Kwiatkowski, S.3
Dunitz, J.D.4
Sth, J.F.M.5
Seebach, D.6
Kalinowski, H.‐O.7
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96
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84990123224
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A summary of the publications dealing with the use of dilithiosulfones in synthesis can be found in [70].
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109
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0002639762
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(f) in 1,2,3,4‐tetrahydro‐l‐magnesio‐2‐pivaloylisoquinoline, the magnesium atom bound to the “benzylic” C atom also forms a five‐membered ring with the carbonyl 0 atom of the amide group
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Seebach, D.1
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Gromek, J.M.4
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110
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0000730188
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Chelat- oder Nicht-Chelat-Kontrolle bei Additionsreaktionen von chiralen α- und β-Alkoxycarbonyl-Verbindungen
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(g) chelate controlled reactions
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(1984)
Angewandte Chemie
, vol.96
, pp. 542
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Reetz, M.T.1
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112
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0000253140
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(a) The importance of these selective reactions is demonstrated by a series of recent reviews
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(1978)
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, pp. 275
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Beak, P.1
Reitz, D.B.2
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138
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67149145295
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Stereoelectronic effects and the kinetic acidities of diastereotopic hydrogens
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This article contains a summary of all the relevant publications on stereoelectronic effects and kinetic acidities of diastereotopic hydrogen atoms in sulfoxides
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(1984)
Canadian Journal of Chemistry
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, pp. 1470
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Wolfe, S.1
Stolow, A.2
La John, L.A.3
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139
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84990086349
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(c) see also [41, 42] and references cited therein
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147
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84990081884
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2O is less important than that of n‐BuLi in THF.
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174
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0003536863
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P. Coppers, M. B. Hall, Plenum, New York, London
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(1982)
Electron Distribution and Chemical Bond
, pp. 445
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Streitwieser, A.1
Grier, D.L.2
Kohler, B.A.B.3
Vorpagel, E.R.4
Schriver, G.W.5
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184
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0021515486
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(1984)
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von R. Schleyer, P.1
Clark, T.2
Kos, A.J.3
Spitznagel, G.W.4
Rhode, C.5
Arad, D.6
Houk, K.N.7
Rondan, N.G.8
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192
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84990102094
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The Chemistry of Triple‐bonded Functional Groups
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Charton, M.1
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194
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33845375095
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(1986)
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Kaneti, J.1
von, P.2
Schleyer, R.3
Clark, T.4
Kos, A.J.5
Spitznagel, G.W.6
Andrade, J.G.7
Moffat, J.B.8
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200
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84990080977
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(b) see also footnote 11 in [111].
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203
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84990131807
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3 −2 NH3: S. Schröder, Universität Marburg 1986.
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205
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0000839903
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3, the C‐N bond length is shortened to 113.5 pm, so that in 59, in which the nitrile nitrogen atom is coordinated to two Li atoms a similar effect could be partly responsible for the short C‐N bond length
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(1969)
Inorg. Chem.
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, pp. 2182
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Swanson, B.1
Skriver, D.F.2
Ibers, J.A.3
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209
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84990135934
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3 [119a, b]; see also
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215
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84990130130
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A summary of the properties and reactions of cyano‐ and RC(O)‐substituted cyclopropyl “anions” is given in [36e].
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220
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84980172164
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Die Umlagerung des 9-Cyan-cis-bicyclo[6.1.0]nona-2,4,6-trien-9-yl-Anions in das 9-Cyanbicyclo[4.2.1] nona-2,4,7-trien-9-yl-Anion Zur Frage der Bicycloaromatizität
-
Accordingly, in the rearrangement of the 9‐cyano‐cis‐bicyclo[6.1.0]nona‐2,4,6‐trien‐9‐yl “anion” an adjacent bond is broken
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(1979)
Chemische Berichte
, vol.112
, pp. 175
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Boche, G.1
Martens, D.2
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221
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0346115458
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Cyclopropyl- und Alkyl-Carbanionen mit Akzeptor-Substituenten in α-Stellung. Eine MO-Studie zur Konfiguration der Anionen und Acidität der entsprechenden CH-Säuren / Cyclopropyl and Alkyl Carbanions with Acceptor Substituents in α-Position. An MO Study of the Configuration of the Anions and the Acidity of the Corresponding CH Acids
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(1982)
Zeitschrift für Naturforschung B
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, pp. 1339
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Wagner, H.‐U.1
Boche, G.2
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251
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84985092616
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Synthesis, Properties, and Crystal Structure of Silyl Nitronates (Silyl Esters ofaci-Nitroalkanes): Towards theSN2 Reaction Path with Retention of Configuration at Silicon
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(1980)
Helvetica Chimica Acta
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Colvin, E.W.1
Beck, A.K.2
Bastiani, B.3
Seebach, D.4
Kai, Y.5
Dunitz, J.D.6
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260
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84990151590
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Stud. Org. Chem. (Amsterdam) B 65
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(1984)
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Fraser, R.R.1
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270
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37049113449
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(a) Many examples of crystal structures of monomeric and dimeric 1‐azaallyllithium compounds, which are not lithiohydrazones, have been published
-
J. Chem. Soc. Chem. Commun.
, vol.1984
, pp. 853
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-
Seebach, D.1
Bauer, W.2
Hansen, J.3
Laube, T.4
Schweizer, W.B.5
Dunitz, J.D.6
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280
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0000450307
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(1984)
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Collum, D.B.1
Kahne, D.2
Gut, S.A.3
DePue, R.T.4
Mohamadi, F.5
Wanat, R.A.6
Clardy, J.7
Van Dyne, G.8
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287
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84990162582
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2·2OEt]∞, is reproduced in Section 10, and fits into this picture.
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289
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84990138058
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2]∞, it is interesting that in reactions of 83 with α,β,‐unsaturated carbonyl componds (Michael addition), one isomer is formed preferentially (de between 82 and > 98%), so that high diastereofacial differentiation and diastereoselectivity are present.
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291
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0001269629
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Struktur und Reaktivität von Lithiumenolaten, vom Pinakolon zur selektivenC-Alkylierung von Peptiden – Schwierigkeiten und Möglichkeiten durch komplexe Strukturen
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Recent review
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(1988)
Angewandte Chemie
, vol.100
, pp. 1685
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Seebach, D.1
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293
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84990162573
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3I to approach the anionic C atom from the side opposite to the ‐OLi bond (, unpublished results, Universitä Marburg, 1989).
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Marsch, M.1
Harms, K.2
Boche, G.3
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294
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0007436576
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(Hexamethylphosphorsäuretriamid)lithiumdicyanmethanid, [LiCH(CH)2(hmpt)]n, eine polymere Verbindung mit dem Malonodinitril-Anion
-
2·HMPA]∞ instead of the (Li‐NLi‐N) four‐membered ring a (LiOLiO) ring is formed. Each Li atom is additionally bound to two N atoms of two malonodinitrile anions,. HMPA with its strong oxygen donor atom apparently makes the difference
-
(1988)
Chemische Berichte
, vol.121
, pp. 1201
-
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Jens, K.1
Kopf, J.2
Lorenzen, N.P.3
Weiss, E.4
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