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7
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0344592200
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Asymmetric aldol reactions of an α′-benzoyl titanium enolate
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For related Li- and Ti(IV)-mediated, syn aldol reactions, see
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(1992)
Tetrahedron
, vol.48
, pp. 5701
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-
Choudhury1
Thornton2
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9
-
-
0027411811
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α′-Benzoyloxy and α′-methoxymethoxy lithium enolates giving opposite diastereofacial selectivities in aldol reactions. Use of (probable) extended chelation for reversal of stereoselectivities
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(1993)
Tetrahedron Letters
, vol.34
, pp. 2221
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-
Choudhury1
Thornton2
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10
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-
0001620385
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New methods and strategies for the stereocontrolled synthesis of polypropionate-derived natural products
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(1992)
Pure and Applied Chemistry
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, pp. 1821
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Paterson1
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12
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0024816607
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Aldol reactions in polypropionate synthesis: High π-face selectivity of enol borinates from α-chiral methyl and ethyl ketones under substrate control
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(1989)
Tetrahedron Letters
, vol.30
, pp. 7121
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-
Paterson1
Goodman2
Isaka3
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13
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-
0026703867
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Studies in polypropionate synthesis: high π-face selectivity in syn aldol reactions of tin(II) enolates from (R)- and (S)-1-benzyloxy-2-methylpentan-3-one.
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(1992)
Tetrahedron Letters
, vol.33
, pp. 4233
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-
Paterson1
Tillyer2
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16
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-
0027183899
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High π-face selectivity in anti aldol reactions of E-enol borinates from chiral alkoxymethyl ketones: stereocontrolled synthesis of a C24-C32 polyol subunit of rapamycin
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(1993)
The Journal of Organic Chemistry
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, pp. 4182
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-
Paterson1
Tillyer2
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17
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0000444632
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1,4-Diastereoselectivity in the aldol condensation of methyl ketones
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For stereoselective Mukaiyama aldol reactions of lactate-derived methyl ketones, see
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(1990)
The Journal of Organic Chemistry
, vol.55
, pp. 3982
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-
Trost1
Urabe2
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22
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0028046376
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Manipulation of the aldol adducts from lactate-derived ketones. A versatile chiral auxiliary for the asymmetric synthesis of β-hydroxy carbonyl compounds
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(following paper)
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(1994)
Tetrahedron Letters
, vol.35
, pp. 9087
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-
Paterson1
Wallace2
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25
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84912979347
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-
All new compounds gave spectroscopic data in agreement with the assigned structures. See ref 7, for proof of aldol stereochemistry.
-
-
-
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30
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0026553351
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Diastereoselective Anti Aldol Reactions of Chiral Ethyl Ketones. Enantioselective Processes for the Synthesis of Polypropionate Natural Products.
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(1992)
Tetrahedron
, vol.48
, pp. 2127
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Evans1
Ng2
Clark3
Rieger4
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31
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0026487205
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Enolisation of ketones by dialkylboron chlorides and trifiates: A model for the effect of reagent leaving group substrate structure and amine base.
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3N. With the benzoate 7, chelation is expected to be precluded and normal cis deprotonation giving the E enol borinate now occurs. For a relevant discussion of enolisation stereocontrol, see
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(1992)
Tetrahedron Letters
, vol.33
, pp. 7223
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Goodman1
Paterson2
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32
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84912961462
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2O/hexane) and/or flash chromatography to give the major anti aldol adduct 11. A [[Truncated]]
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