Volume 46; Issue 6

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Tetrahedron
Volume 46; Issue 6

Tetrahedron

Volume 46; Issue 6

1

Further advances in the chemistry of mannich bases

Maurilio Tramontini, Luigi Angiolini

Journal:

Year:

1990

Language:

english

File:

PDF, 3.16 MB

english, 1990

2

Reductions par les hydrures et hydroboration etude de la stereoselectivite de nouvelles voies d'acces aux 3-arylmethyl-4-chromanols (Homoisoflavanols)

Michel Gomis, B. Serge Kirkiacharian

Journal:

Year:

1990

File:

PDF, 758 KB

1990

3

Synthese totale du (±) hirsutene

J. Cossy, D. Belotti, J.P. Pete

Journal:

Year:

1990

File:

PDF, 793 KB

1990

4

Regio- and stereoselective synthesis of allyltrimethylsilanes via krief-reich elimination in β-seleno-γ- silyl alcohols

Tarun K. Sarkar, Sunil K. Ghosh, Tushar K. Satapathi

Journal:

Year:

1990

Language:

english

File:

PDF, 1.02 MB

english, 1990

5

Evidence for rate limiting C-H bond cleavage in the leuckart reaction

Peter I. Awachie, Vincent C. Agwada

Journal:

Year:

1990

Language:

english

File:

PDF, 772 KB

english, 1990

6

Betaines derived from amino and hydrazino acids as phase transfer catalysts

Yuri Goldberg, Edgars Ābele, Gunārs Bremanis, Pēteris Trapenciers, Alexander Gaukhman, Juris Popelis, Artur Gomtsyan, Ivars Kalviņš, Mariya Shymanska, Edmunds Lukevics

Journal:

Year:

1990

Language:

english

File:

PDF, 745 KB

english, 1990

7

New ent-pimarane diterpenes

Antonio G. González, José J. Mendoza, Javier G. Luis, Angel G. Ravelo, Teresa Abad Grillo, Jesús T. Vázquez, Arturo San Feliciano

Journal:

Year:

1990

Language:

english

File:

PDF, 475 KB

english, 1990

8

Enantioselective synthesis of hydroxy α-amino acids. (-)-erythro- and (-) -threo-γ-hydroxynorvalines

Jesus Ariza, Josep Font, Rosa M. Ortuño

Journal:

Year:

1990

Language:

english

File:

PDF, 723 KB

english, 1990

9

Stereochemical studies, 144. Saturated heterocycles, 151 Preparation of cis and trans-cycloalkane-condensed pyrimidinediones by azetidinone ring transformation

Géza Stájer, Zsolt Szóke-Molnar, Gábor Bernáth, Pál Sohár

Journal:

Year:

1990

Language:

english

File:

PDF, 524 KB

english, 1990

10

Diels-Alder cycloaddittion reactions of enaminothions with nitroalkenes

P.D. Baruah, S. Mukherjee, M.P. Mahajan

Journal:

Year:

1990

Language:

english

File:

PDF, 738 KB

english, 1990

11

A series second-first-order mechanism for the oxidation of primary and secondary alcohols by Cr(VI) reagents

Seema Agarwal, H.P. Tiwari, J.P. Sharma

Journal:

Year:

1990

Language:

english

File:

PDF, 561 KB

english, 1990

12

Nitrile oxides in medicinal chemistry-2. synthesis of the two enantiomers of dihydromuscimol

Marco De Amici, Carlo De Micheli, Valeria Misani

Journal:

Year:

1990

Language:

english

File:

PDF, 821 KB

english, 1990

13

Conformational inversion in the dodecahydrotriphenylene radical cation

David V. Avila, Alwyn G. Davies, Maria L. Girbal

Journal:

Year:

1990

Language:

english

File:

PDF, 438 KB

english, 1990

14

The synthesis and some reactions OF 3-(2-aminophenyl)-2-iminothiazolidines. ring closure of n-(2-thiocyanaoethyl,)-ophenylenediamines; thiazolidine vs. 3,1,6-benzothiadiazocine formation

Gy. Hornyák, F. Bertha, K. Zauer, K. Lempert, A. Feller, E. Pjeczka

Journal:

Year:

1990

Language:

english

File:

PDF, 1.38 MB

english, 1990

15

Copper and cobalt mediated regioselective alkylation of polyketide models: methyl 3,5-dioxohexanoate and triacetic acid lactone

Jordi Cervello, Jorge Marquet, Marcial Moreno-Mañas

Journal:

Year:

1990

Language:

english

File:

PDF, 1.04 MB

english, 1990

16

Efficient regioselective a-ring functionalization of oestrogens

Philip C. Bulman Page, Fazal Hussain, James L. Maggs Paul Morgan, B. Kevin Park

Journal:

Year:

1990

Language:

english

File:

PDF, 646 KB

english, 1990

17

A simple and general one-pot synthesis of some 2h-pyran-2-ones and fused pyran-2-ones

Vladimir Kepe, Marijan Kocevar, Solvenko Polanc, Bojan Verc̈ek, Miha Tis̈ler

Journal:

Year:

1990

Language:

english

File:

PDF, 465 KB

english, 1990

18

Photolytic ring-expansions of 6-azidoquinolines and 6-azidodiazines: some unexpected azepine ring-opening reactions

Roy Hayes, Joseph M. Schofield, Robert K. Smalley, David I.C. Scopes

Journal:

Year:

1990

Language:

english

File:

PDF, 546 KB

english, 1990

19

Aromatic annulation with naphtho[1,8-de]-1,3-dithiin carbocations

Swarna A. Gamage, Robin A.J. Smith

Journal:

Year:

1990

Language:

english

File:

PDF, 1.32 MB

english, 1990

20

An unexpected formation of a new 3-imidazoline free radical

E.A.V. Rijk, G.I. Tesser

Journal:

Year:

1990

Language:

english

File:

PDF, 345 KB

english, 1990

21

Acyl radical cyclizations in synthesis. part 2 further substituent effects on the mode and efficiency of cyclizaion of 6-heptenoyl radicals.

David Crich, K. Angeline Eustace, Simon M. Fortt, Timodthy J. Ritchie

Journal:

Year:

1990

Language:

english

File:

PDF, 769 KB

english, 1990

22

Synthesis of [3t̄'(O)→-5t̄'(c)]-oxyacetamido linked nucleosides

Á. Nyilas, C. Glemarec, J. Chattopadhyaya

Journal:

Year:

1990

Language:

english

File:

PDF, 1.42 MB

english, 1990

23

Substituents effect on the claisen rearrangement

Giovanni Desimoni, Giuseppe Faita, Anna Gamba, Pier Paolo Righetti, Gianfranco Tacconi, Lucio Toma

Journal:

Year:

1990

Language:

english

File:

PDF, 728 KB

english, 1990

24

The synthesis of phosphor derivatives of ribosyl zeatin

Belal Shadid, Henk C. van der Plas

Journal:

Year:

1990

Language:

english

File:

PDF, 611 KB

english, 1990

25

Regio- and chemoselective conjugate 1,4-reduction of α-oxoketene dithioacetals with sodium borohydride and sodium cyanoborohydride

Ch. Srinivasa Rao, R.T. Chakrasali, Hiriyakkanavar Ila, Hiriyakkanavar Junjappa

Journal:

Year:

1990

Language:

english

File:

PDF, 662 KB

english, 1990

26

SRN1 syntheses of bis(phenylthio)- and dicyano-naphthalenes via diazosulfides

M. Novi, G. Garbarino, G. Petrillo, C. Dell'Erba

Journal:

Year:

1990

Language:

english

File:

PDF, 452 KB

english, 1990

27

X = Y-ZH systems as potential 1,3-dipoles. part 27 Intramolecular cycloaddition reactions of imines of cyclic secondary α-amino esters. dipole and cycloaddition stereochemistry

Ronald Grigg, Linda M. Duffy, Michael J. Dorrity, John F. Malone, Shuleewan Rajviroongit, Mark Thornton-Pett

Journal:

Year:

1990

Language:

english

File:

PDF, 1.12 MB

english, 1990

28

Pentaalkylguanidines as etherification and esterification catalysts

Gérard Barcelo, Denis Grenouillat, Jean-Pierre Senet, Gérard Sennyey

Journal:

Year:

1990

Language:

english

File:

PDF, 601 KB

english, 1990

29

Decomposition reactions of arteether, a semisynthetic derivative of qinghaosu (artemisinin)

O.R. Idowu, J.L Maggs, S.A. Ward, G. Edwards

Journal:

Year:

1990

Language:

english

File:

PDF, 789 KB

english, 1990

30

Asymmetric synthesis of malic acid-type synthons VIA chiral norephedrine-derived oxazolidines

Anna Bernardi, Silvia Cardani, Carlo Scolastico, Roberto Villa

Journal:

Year:

1990

Language:

english

File:

PDF, 820 KB

english, 1990

31

Total synthesis of (+) - leiocarpin and (±) isohemileiocarpin

D.D. Narkhede, P.R. Iyer, C.S.R. Iyer

Journal:

Year:

1990

Language:

english

File:

PDF, 310 KB

english, 1990

32

Synthesis of bridged dinucleosides

Demetrios C. Agathocleous, Philip C. Bulman Page, Richard Cosstick, Ian J. Galpin, Alexander G. McLennan, Mark Prescott

Journal:

Year:

1990

Language:

english

File:

PDF, 856 KB

english, 1990

33

Reactivity of 3,6-dimethoxy-3, 6-dimethylcyclohexa-1, 4-diene: nuclear versus benzylic nucleophilic substitution

Francisco Alonso, Isidoro Barba, Miguel Yus

Journal:

Year:

1990

Language:

english

File:

PDF, 727 KB

english, 1990

34

Experimental studies of the anomeric effect. Part IV. Conformational equilibria due to ring inversion in tetrahydropyrans substituted at position 2 by the groups ethoxy, 2'-fluoroethoxy, 2',2,'-difluoroethoxy, and 2',2',2'-trifluoroethoxy

Harold Booth, Simon A Readshaw

Journal:

Year:

1990

Language:

english

File:

PDF, 775 KB

english, 1990

35

Synthetic study towards the tetracyclic quassinoid skeleton

Tony K.M. Shing, Tang Ying

Journal:

Year:

1990

Language:

english

File:

PDF, 488 KB

english, 1990