Volume 18; Issue 25

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Tetrahedron Letters
Volume 18; Issue 25

Tetrahedron Letters

Volume 18; Issue 25

1

Darstellung von 1-substituierten tricyclo[4.1.0.02,7]heptanen

G. Szeimies, F. Philipp, O. Baumgärtel, J. Harnisch

Journal:

Tetrahedron Letters

Année:

1977

Langue:

german

Fichier:

PDF, 191 KB

german, 1977

2

Diels-alder-reaktionen mit cyanthioformamiden.

Klaus Friedrich, Mohebullah Zamkanei

Journal:

Tetrahedron Letters

Année:

1977

Langue:

german

Fichier:

PDF, 102 KB

german, 1977

3

(±)-trans-7-azido-1,2-secoceph-3-em-4-carbonsäureester mit modifizierten seitenketten aus 5-substituierten 2-thiazolin-4-carbonsäureestern

Michael Kloft, Dieter Hoppe

Journal:

Tetrahedron Letters

Année:

1977

Fichier:

PDF, 262 KB

1977

4

Dichlorocarbene addition to 1,2-dimethoxybiphenylene. A chemical evidence for bond fixation in biphenylene nucleus

Masaru Sato, Akiko Uchida, Josuke Tsunetsugu, Seiji Ebine

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 220 KB

english, 1977

5

Sulferalin, a novel sulfonyl pseudoguaianolide sesquiterpene lactone from Sendai Helenium autumnale L.

Yoshikazu Kondo, Fumihiko Yoshizaki, Fumio Hamada, Jiro Imai, Genjiro Kusano

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 233 KB

english, 1977

6

Hydrophobic forces in the stereoselective hydrolyses of 3-nitro-4-acyloxybenzoic acid substrates catalyzed by hydroxamic acids

R. Ueoka, M. Kato, K. Ohkubo

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 188 KB

english, 1977

7

Bassianolide, a new insecticidal cyclodepsipeptide from Beauveria bassiana and Verticillium lecanii

Akinori Suzuki, Masaharu Kanaoka, Akira Isogai, Saburo Tamura, Shigeo Murakoshi, Masakatsu Ichinoe

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 207 KB

english, 1977

8

Isoaplysin-20, a natural bromine-containing diterpene, from Aplysia kurodai

Shosuke Yamamura, Yukimasa Terada

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 141 KB

english, 1977

9

Aromatic SRN1 reaction in aqueous tertiary butyl alcohol

S. Rajan, P. Sridaran

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 214 KB

english, 1977

10

Alkaloid catalyzed asymmetric synthesis III the addition of mercaptans to 2-cyclohexene-1-one; determination of enantiomeric excess using 13C NMR.

R. Helder, R. Arends, W. Bolt, H. Hiemstra, Hans Wynberg

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 117 KB

english, 1977

11

Determination of the enantiomeric purity of chiral ketones using 13C NMR spectroscopy of their diastereomeric cyclic ketals

Henk Hiemstra, Hans Wynberg

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 246 KB

english, 1977

12

N-hetaryltetrazoles - I. tetrazolyltetrazolo/1,5-a/pyrimidines, intermediates in the formation of s-triazolo/4, 3-c/tetrazolo/1, 5-a/pyrimidines

A. Könnecke, E. Lippmann

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 132 KB

english, 1977

13

Photoexcited nitrobenzene for benzylic hydroxylation: the synthesis of 17β-acetoxy-9α-hydroxy-3-methoxy-estra-1,3,5(10)-triene

Jacqueline Libman, Elisha Berman

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 128 KB

english, 1977

14

A novel nucleophilic substitution of the pyridine ring

P. Tomasik, A. Woszczyk

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 112 KB

english, 1977

15

The oxidation of furan derivatives with pyridinium chlorochromate: A novel synthesis of 6-hydroxy-2 h-pyran-3 (6 H)-ones

G. Piancatelli, A. Scettri, M. D'Auria

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 99 KB

english, 1977

16

New ways for generation of reactive stannylenes R2Sn, R = Me, Et

Christian Grugel, Wilhelm P. Neumann, Peter Seifert

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 215 KB

english, 1977

17

The structures and chemistrty of isobacteriochlorins from Desulphovibrio gigas

Alan R. Battersby, Keith Jones, Edward McDonald, John A. Robinson, Howard R. Morris

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 211 KB

english, 1977

18

Biosynthesis of vitamin B12: Structural studies on the corriphryins from Propionibacterium shermanii and the link with sirohydrochlorin

Alan R. Battersby, Edward McDonald, Mervyn Thompson, D.Clive Williams, Howard R. Morris, Vladimir Ya. Bykhovsky, Natalia I. Zaitseva, Vasilii N. Bukin

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 204 KB

english, 1977

19

(±)-trans-7-azido- und 7-phthalimido-1,2-secoceph-3-em-4-carbonsäureester aus 3-substituierten 2-isothiocyanato-acrylsäureestern

Dieter Hoppe, Michael Kloft

Journal:

Tetrahedron Letters

Année:

1977

Fichier:

PDF, 131 KB

1977

20

Configuration of an ethyl β-nitrocinnamate and its 1,2- and 1,4-cycloaddition to cyclopentadiene

Chung-gi Shin, Hirotoshi Narukawa, Masanori Yamaura, Juji Yoshimura

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 248 KB

english, 1977

21

Direct observation of a carbenium ion stabilized by neighboring two sulfurs

Masaru Hojo, Tadaaki Ichi, Toru Nakanishi, Noritaka Takaba

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 202 KB

english, 1977

22

Cyclodextrins as chiral nuclear magnetic resonance shift reagents

David D. MacNicol, David S. Rycroft

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 158 KB

english, 1977

23

The reductive coupling of dibenzylidenacetone by osmium (IV) salts

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 129 KB

english, 1977

24

Mechanistic implications obtained from different degrees of intramolecular hydrogen transfer reactions on competing metastable transitions of gaseous organic cations. the case of ethyl benzoate.

Francesco Lelj, Giovanni Sindona, Nicola Uccella

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 272 KB

english, 1977

25

The synthesis of locust adipokinetic hormone

Colin E. Broomfield, Paul M. Hardy

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 171 KB

english, 1977

26

Reactions and properties of acetidin-2-oxo-4-thiones

Mario D. Bachi, Jacob Vaya

Journal:

Tetrahedron Letters

Année:

1977

Langue:

english

Fichier:

PDF, 205 KB

english, 1977