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1
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0344799549
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Enantioselective synthesis via sparteine-induced asymmetric deprotonation
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(a) Reviews
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(1994)
Pure and Applied Chemistry
, vol.66
, pp. 1479-1486
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Hoppe, D.1
Hintze, F.2
Tebben, P.3
Paetow, M.4
Ahrens, H.5
Schwerdtfeger, J.6
Sommerfeld, P.7
Haller, J.8
Guarnieri, W.9
Kolczewski, S.10
Hense, T.11
Hoppe, I.12
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4
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0000311605
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α-Deprotonierung eines α-chiralen 2-Alkenylcarbamats unter Retention und Lithium-Titan-Austausch unter Inversion - zur Homoaldol-Reaktion unter 1,3-Chiralitätsübertragung
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(1986)
Angewandte Chemie
, vol.98
, pp. 171-173
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Hoppe, D.1
Krämer, T.2
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22
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0003287165
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η1-(1S,2E)-1-(N, N-Diisopropylcarbamoyloxy)-3-trimethylsilyl-allyllithium-(-)-Spartein: Struktur einer chiralen, Carbamoyloxy-substituierten Allyllithium-Verbindung
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(1991)
Angewandte Chemie
, vol.103
, pp. 338-339
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Marsch, M.1
Harms, K.2
Zschage, O.3
Hoppe, D.4
Boche, G.5
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29
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33751386340
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Regio- and stereoselective carbon-carbon bond formation through transition metal catalysis. The influence of catalyst chirality on selective ethylmagnesiation of chiral, nonracemic alcohols and ethers
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4237–4244
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(1993)
The Journal of Organic Chemistry
, vol.58
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Hoveyda, A.H.1
Morken, J.J.2
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31
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0001160731
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Monomer-Dimer-Gleichgewichte in homo- und heterodinuclearen kationischen Alkylzirconiumkomplexen: zur Rolle von Alkylaluminiumverbindungen bei der Stabilisierung katalytisch aktiver Zentren
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1715–1718
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(1994)
Angewandte Chemie
, vol.106
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Bochmann, M.1
Lancaster, S.J.2
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33
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84985568223
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Tetrahedron Lett.
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(1965)
, pp. 4569-4572
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Bott, K.1
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35
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0001032065
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Proton-Mobility in the Indene Ring-System. IV. Alkyl-Substituted Indenes; their Syntheses, Structures, and Tautomeric Rearrangements.
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2724–2734
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(1963)
Acta Chemica Scandinavica
, vol.17
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Weidler, A.1
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40
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84985594535
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(R)‐(–)‐5m was obtained in 87% yield by methylation of (R)‐(–)‐5a with MeMgI and (R)‐(–)‐5d in 57% yield by oxidation of [1R,1(R,S)]‐(–)‐5i with PDC.
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41
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84985568213
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2 with all reflections (SHELXL‐93). The nonhydrogen atoms were refined anisotropically, the H atoms isotropically. Parameters of the weighting scheme: 0.0589, 0.8644; extinction coefficient x = 0.0029(3); wR2 (R1 for 3429 reflections with I>2σI): 0.145 (0.055), 445 refined parameters. All calculations were carried out on a Micro‐VAX II and a DEC 3000‐300X [15–19].
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42
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84985585261
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Siemens SHELXTL‐PLUS (VMS) V 4.21, Siemens Analytical X‐Ray Instruments, Inc., Madison, 1990.
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43
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84985585253
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SHELXL‐93, Program for the Refinement of Crystal Structures, Göttingen, 1993.
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Sheldrick, G.M.1
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44
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84985544043
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Platon 92, Program for the geometric analysis of Crystal Structures, Utrecht, 1992.
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Spek, A.L.1
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45
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84985506482
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SCHAKAL‐88B, a FORTRAN Program for the Graphic Representation of Molecular and Crystallographic Models, Freiburg, 1988.
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Keller, E.1
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46
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84985506479
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Further details of the crystal structure determinations can be obtained from the Director of the Cambridge Crystallographic Data Centre, 12 Union Road, GB‐Cambridge CB2 1EZ, on quoting the full journal citation.
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51
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84985585265
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8]THF (1/1)[23·24].
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53
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84985594596
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Dissertation, Universität Marburg, 1995.
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Schade, S.1
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54
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84918716484
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+ in THF solution or can be replaced by THF. A review of this topic is found in the article of
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(1993)
Acc. Chem. Res.
, vol.26
, pp. 227-234
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Collum, D.B.1
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55
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84985539663
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2 with all reflections (SHELXL‐93). The non‐hydrogen atoms were refined anisotropically, the hydrogen atoms isotropically. Parameters for the weighting scheme: 0.1088, 1.5505; wR2(R1 for 2238 reflections with I>2σI): 0.194 (0.065), 242 refined parameters. The data were corrected with the programm DIFABS. All calculations were carried out on a Micro‐VAX II and a DEC 3000‐300X[15–19,26].
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