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Results 1 to 25 of 4837

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Some observations on the validity and generality of the Cieplak stereoelectronic effectMEYERS, A. I; WALLACE, R. H.Journal of organic chemistry. 1989, Vol 54, Num 11, pp 2509-2510, issn 0022-3263, 2 p.Article

Efficient synthesis of exo-and endo-brevicomin from a single precursorRAMSWAMY, S; OEHLSCHLAGER, A. C.Canadian journal of chemistry (Print). 1989, Vol 67, Num 5, pp 794-796, issn 0008-4042, 3 p.Article

Control of diastereofacial selectivity in the epoxidation of rigid allylic ethersMANDVILLE, G; MOHAMMED AHMAR; BLOCH, R et al.Tetrahedron letters. 1993, Vol 34, Num 13, pp 2119-2122, issn 0040-4039Article

Ethylenbis(sulfonyl)-überbrücktes 1,1'-Binaphthalin, ein atropisomeres Dienophil für hochdiastereoselektive Diels-Alder-Reaktionen = Ethylenebis(sulfonyl)-bridged 1,1'-binaphtalene, an atropisomeric dienophile for highly diastereoselective Diels Alder reactionsCOSSU, S; DELOGU, G; DE LUCCHI, O et al.Angewandte Chemie. 1989, Vol 101, Num 6, pp 767-768, issn 0044-8249, 2 p.Article

Brève préhistoire de la synthèse asymétrique = Brief historical account of asymmetric synthesisJACQUES, J.Bulletin de la Société chimique de France. 1995, Vol 132, Num 4, pp 353-359, issn 0037-8968Conference Paper

Highly diastereoselective 1,2-asymmetric addition of dialkylzincs to chirla 2-phenylpropanal catalyzed by amino alcoholSOAI, K; NIWA, S; HATANAKA, T et al.Bulletin of the Chemical Society of Japan. 1990, Vol 63, Num 7, pp 2129-2130, issn 0009-2673Article

Tartraldehydes III1. Synthesis of N-benzoyl-L-ristosamine and -L-acosamineKOVACS, I; HERCZEGH, P; SZTARICSKAI, F. J et al.Tetrahedron (Oxford. Print). 1991, Vol 47, Num 37, pp 7837-7844, issn 0040-4020Article

(Ligand)Übergangsmetall-π-Komplexe organosubstituierter 2,5-Dihydro-1,2,5-azasilaborole ― Herstellung und Charakterisierung in Lösung = (Ligand) Complexes-π- de métaux de transition, comportant le dihydro-2,5 azasilabirole-1,2,5 substitué par des composés organiques. Synthèse et caractérisation en solution = (Ligand) Transition metal M-complexes of organosubstituted 2,5-dihydro-1,2,5-azasilaboroles. Preparation and characterization in solutionKÖSTER, R; SEIDEL, G; WRACKMEYER, B et al.Chemische Berichte. 1989, Vol 122, Num 11, pp 2055-2073, issn 0009-2940, 19 p.Article

Highly diastereoselective synthesis of N-Boc dolaisoleuine, unusual amino acid in dolastatin 10KANO, S; YUASA, Y; SHIBUYA, S et al.Heterocycles (Sendai). 1990, Vol 31, Num 9, pp 1597-1600, issn 0385-5414Article

A novel asymmetric desymmetrisation of meso-cyclopentane-1,2-diol via diastereoselective β-elimination of chiral α-arylsulfinyl acetalsMAEZAKI, N; SOEJIMA, M; TAKEDA, M et al.Journal of the Chemical Society. Chemical communications. 1994, Num 11, pp 1345-1346, issn 0022-4936Article

Enantiomeric purity with conglomeratesMCCAGUE, R.Manufacturing chemist (London. 1981). 1998, Vol 69, Num 4, pp 22-23, issn 0262-4230Article

The diastereoselectivity of electrophilic attack on trigonal carbon adjacent to a stereogenic centre : diastereoselective alkylation and protonation of open-chain enolates having a stereogenic centre at the β positionFLEMING, I; LEWIS, J. J.Journal of the Chemical Society. Perkin transactions. I. 1992, Num 24, pp 3257-3266, issn 0300-922XArticle

Highly diastereoselective catalytic meerwein-ponndorf-verley reductionsJINGJUN YIN; HUFFMAN, Mark A; CONRAD, Karen M et al.Journal of organic chemistry. 2006, Vol 71, Num 2, pp 840-843, issn 0022-3263, 4 p.Article

Regulation of diastereofacial selection in the allylation reaction of N-acyliminium ion utilizing Lewis acidsUKAJI, Y; TSUKAMOTO, K; NASADA, Y et al.Chemistry Letters. 1993, Num 2, pp 221-224, issn 0366-7022Article

A simple stereoselective synthesis of C2-branched 2-deoxy pentitolsSABA, A.Tetrahedron : asymmetry (Print). 1992, Vol 3, Num 3, pp 371-374, issn 0957-4166Article

Enantioselective synthesis of (+)-endo- and (-)-exo-1,3-dimethyl-2,9-dioxa-bicyclo[3.3.1]nonaneBULMAN PAGE, P. C; RAYNER, C. M; SUTHERLAND, I. O et al.Journal of the Chemical Society. Perkin transactions. I. 1990, Num 9, pp 2403-2408, issn 0300-922X, 6 p.Article

Diastereoselective reactions of 1,4-bis(bromomagnesio)pentane with lactones and cyclic anhydridesCANNONE, P; BOULANGER, R; BERNATCHEZ, M et al.Tetrahedron (Oxford. Print). 1989, Vol 45, Num 9, pp 2525-2540, issn 0040-4020, 16 p.Article

Stereokontrollierte Synthesen von Mannich-Basen und γ-Aminoalkoholen = Stereocontrolled syntheses of Mannich bases and γ-amino alcoholsRISCH, N; ESSER, A.Liebigs Annalen der Chemie. 1992, Num 3, pp 233-237, issn 0170-2041Article

Stereoselective allyl-and crotylboration of alpha-hydroxyketones via neighboring group controlZHE WANG; XIAN-JUN MENG; KABALKA, G. W et al.Tetrahedron letters. 1991, Vol 32, Num 17, pp 1945-1948, issn 0040-4039Article

Double diastereoselective acetate aldol reactions with chiral N-acetyl thiazolidinethione reagentsYINGCHAO ZHANG; SAMMAKIA, Tarek.Journal of organic chemistry. 2006, Vol 71, Num 16, pp 6262-6265, issn 0022-3263, 4 p.Article

Synthesis and application of carbohydrate-derived morpholine amino acidsGROTENBREG, Gijsbert M; CHRISTINA, Alphert E; BUIZERT, Annelies E. M et al.Journal of organic chemistry. 2004, Vol 69, Num 24, pp 8331-8339, issn 0022-3263, 9 p.Article

Simple diastereoselectivity on addition of α-haloalkyl Grignard reagents to benzaldehydeSCHULZE, Volker; NELL, Peter G; BURTON, Andrew et al.Journal of organic chemistry. 2003, Vol 68, Num 11, pp 4546-4548, issn 0022-3263, 3 p.Article

Addition von Nitromethan an Aldosen Untersuchungen der Diastereoselektivität der Fischer-Sowden-Reaktion mit Hilfe der 13C-NMR-SpektroskopieKÖLL, P; STENNS, C; SEELHORST, W et al.Liebigs Annalen der Chemie. 1991, Num 3, pp 201-206, issn 0170-2041Article

1H-NMR spectra of all diastereomeric nitroalditols with a chain length up to C7, obtained from aldoses by the Fischer-Sowden reactionKÖLL, P; BRANDENBURG, H; SEELHORST, W et al.Liebigs Annalen der Chemie. 1991, Num 3, pp 207-211, issn 0170-2041Article

Hochselektive Synthese Von Dipeptid-Isosteren (E)-Alkenen Hoger Optischer Reinheit mit RCu(CN)Li. BF3IBUKA, V. T; HABASHITA, H; FUNAKOSHI, S et al.Angewandte Chemie. 1990, Vol 102, Num 7, pp 816-818, issn 0044-8249Article

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