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W. Nico Speckamp

Veröffentlichungen von W. Nico Speckamp zu Speckamp, W. Nico. ->
weitere Veröffentlichungen von W. Nico Speckamp:
Efficient and stereoselective synthesis of 2,3-dihydroindoles via 1,5-electrocyclization (1981)
Two clonidine-like compounds with substituents at the 2-, 3-, and 6-position of the phenyl ring possessing pronounced hypotensive potencies (1982)
A stereoselective synthesis of indole alkaloid intermediates via N-acyliminium cyclizations (1981)
Synthesis and absolute configuration of the Aristotelia alkaloid peduncularine (1989)
Xanthate Transfer Addition of a Glycine Radical Equivalent to Alkenes. A Novel Route to .alpha.-Amino Acid Derivatives (1994)
Synthesis of N-Boc-protected 1-amino-3-alken-2-ols from allylic carbamates via palladium(II)-catalyzed oxidative cyclization (1992)
(R)-1-Acetyl-5-isopropoxy-3-pyrrolin-2-one: a versatile chiral dienophile from (S)-malic acid (1992)
Synthesis of the aspidosperma skeleton through allylsilane N-acyliminium cyclization (1990)
Synthetic studies toward gelsemine. 2. Preparation of the tetracyclic skeletal part by way of a highly stereospecific intramolecular reaction of a silyl enol ether with an N-acyliminium ion (1988)
2-azonia-Cope rearrangement in N-acyliminium cyclizations (1986)
.omega.-Alkoxy lactams as dipolar synthons. Silicon-assisted synthesis of azabicycles and a .gamma.-amino acid (1984)
Lewis Acid-Induced π-Cyclization of Glycine-Cation Equivalents to Substituted Pipecolic Acid Derivatives (1989)
A Practical Synthesis of Geometrically Pure N-Boc-Protected Primary Allylic Amines (1994)
Synthesis of Enantiomerically Pure Eight- and Nine-Membered Lactones by Copper(I) Chloride/2,2’-Bipyridine-Catalyzed Cyclization (1995)
Synthesis of cyclic α-amino acids through ring closure of glycine derived free radicals (1990)
Veröffentlichungen zu Speckamp, W. Nico.
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1
Speckamp, W. Nico. Efficient and stereoselective synthesis of 2,3-dihydroindoles via 1,5-electrocyclization
In: American Chemical Society: Journal of the American Chemical Society. - Washington, DC : American Chemical Society, ISSN 1520-5126, Vol. 103, No. 15 (1981), p. 4643-4645
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1981
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2
Timmermans, Pieter B. M. W. M.. Two clonidine-like compounds with substituents at the 2-, 3-, and 6-position of the phenyl ring possessing pronounced hypotensive potencies
In: Journal of medicinal chemistry. - Easton, Pa. : American Chemical Society, ISSN 1520-4804, Vol. 25, No. 10 (1982), p. 1122-1123
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1982
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3
Veenstra, Siem J.. A stereoselective synthesis of indole alkaloid intermediates via N-acyliminium cyclizations
In: American Chemical Society: Journal of the American Chemical Society. - Washington, DC : American Chemical Society, ISSN 1520-5126, Vol. 103, No. 15 (1981), p. 4645-4646
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1981
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4
Klaver, Wim J.. Synthesis and absolute configuration of the Aristotelia alkaloid peduncularine
In: American Chemical Society: Journal of the American Chemical Society. - Washington, DC : American Chemical Society, ISSN 1520-5126, Vol. 111, No. 7 (1989), p. 2588-2595
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1989
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5
Udding, Jan H.. Xanthate Transfer Addition of a Glycine Radical Equivalent to Alkenes. A Novel Route to .alpha.-Amino Acid Derivatives
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 59, No. 13 (1994), p. 3721-3725
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1994
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6
Van Benthem, Rolf A. T. M.. Synthesis of N-Boc-protected 1-amino-3-alken-2-ols from allylic carbamates via palladium(II)-catalyzed oxidative cyclization
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 57, No. 23 (1992), p. 6083-6085
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1992
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7
Koot, Wim Jan. (R)-1-Acetyl-5-isopropoxy-3-pyrrolin-2-one: a versatile chiral dienophile from (S)-malic acid
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 57, No. 4 (1992), p. 1059-1061
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1992
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8
Mittendorf, J., Hiemstra, H., ... Synthesis of the aspidosperma skeleton through allylsilane N-acyliminium cyclization
in: Tetrahedron, in: Tetrahedron . - Amsterdam : Elsevier, ISSN 0040-4020, ZDB-ID 2007072-X Vol. 46, No. 11 (1990), p. 4049-4062
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1990
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9
Hiemstra, Henk. Synthetic studies toward gelsemine. 2. Preparation of the tetracyclic skeletal part by way of a highly stereospecific intramolecular reaction of a silyl enol ether with an...
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 53, No. 16 (1988), p. 3882-3884
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1988
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10
Ent, Hugo. 2-azonia-Cope rearrangement in N-acyliminium cyclizations
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 51, No. 10 (1986), p. 1687-1691
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1986
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11
Hiemstra, Henk. .omega.-Alkoxy lactams as dipolar synthons. Silicon-assisted synthesis of azabicycles and a .gamma.-amino acid
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 49, No. 6 (1984), p. 1149-1151
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1984
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12
Esch, Peter M.. Lewis Acid-Induced π-Cyclization of Glycine-Cation Equivalents to Substituted Pipecolic Acid Derivatives
In: Synlett. - Stuttgart [u.a.] : Thieme Vol. 1989, No. 01 (1. 1989), p. 38-40
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1989
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13
van Benthem, Rolf A. T. M.. A Practical Synthesis of Geometrically Pure N-Boc-Protected Primary Allylic Amines
In: Synlett. - Stuttgart [u.a.] : Thieme Vol. 1994, No. 05 (0. 1994), p. 368-370
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1994
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14
Pirrung, Frank O.H.. Synthesis of Enantiomerically Pure Eight- and Nine-Membered Lactones by Copper(I) Chloride/2,2’-Bipyridine-Catalyzed Cyclization
In: Synthesis. - Stuttgart [u.a.] : Thieme Vol. 1995, No. 04 (4. 1995), p. 458-472
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1995
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15
Esch, P.M., Hiemstra, H., ... Synthesis of cyclic α-amino acids through ring closure of glycine derived free radicals
in: Tetrahedron Letters, in: Tetrahedron Letters . - Amsterdam : Elsevier, ISSN 0040-4039, ZDB-ID 2007074-3 Vol. 31, No. 5 (1990), p. 759-762
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1990
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16
Hiemstra, H., Fortgens, H.P., ... Lewis acid induced reactions of propargyl trimethyl silane with ω-ethoxy lactams synthesis of γ-allenyl-GABA
in: Tetrahedron Letters, in: Tetrahedron Letters . - Amsterdam : Elsevier, ISSN 0040-4039, ZDB-ID 2007074-3 Vol. 25, No. 29 (1984), p. 3115-3118
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1984
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17
Esch, P.M., Hiemstra, H., ... Intermolecular reacitons of N-alkoxycarbonyliminium ions with propargyltrimethylsilane; oxazinone versus allene formation
in: Tetrahedron, in: Tetrahedron . - Amsterdam : Elsevier, ISSN 0040-4020, ZDB-ID 2007072-X Vol. 48, No. 16 (1992), p. 3445-3462
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1992
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18
Udding, Jan H.. Xanthate Transfer Cyclization of Glycolic Acid-Derived Radicals. Synthesis of Five- to Eight-Membered Ring Ethers
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 59, No. 22 (1994), p. 6671-6682
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1994
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19
Mooiweer, H.H., Ettema, K.W.A., ... Preparation of γ oxo-α-amino acids from silyl enol ethers and glycine cation equivalents; a facile synthesis of (+/-)-5-hydroxy.4.Oxonorvaline (HON)
in: Tetrahedron, in: Tetrahedron . - Amsterdam : Elsevier, ISSN 0040-4020, ZDB-ID 2007072-X Vol. 46, No. 8 (1990), p. 2991-2998
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1990
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20
Roos, Eric C.. Synthesis of γ,δ-Unsaturated α-Methyl-α-amino Acids via Coupling of Allylsilanes with an α-Methylglycine Cation Equivalent
In: Synlett. - Stuttgart [u.a.] : Thieme Vol. 1992, No. 05 (0. 1992), p. 451-452
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1992