Tetrahedron Letters

Tetrahedron Letters: The International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry, Number 1-30 1963 presents developments in theoretical and experimental organic chemistry. The journal is published weekly to a large, international group of scientists. The publication facilitates the immediate and wide dissemination of various scientific papers from researchers all over the world in the field of organic chemistry. The current volume provides research papers that discuss such subjects as the cyclo-addition of 1,3-butadienes to aromatic hydrocarbons to form indans; acidic deacetylation of sugar acetates; and the biogenetic-type synthesis of emetine.

Theoretical and experimental organic chemists will find the journal very useful.

Contenu

Number 1

The Cyclo-Addition of 1,3-Butadienes to Aromatic Hydrocarbons to Form Indans

The Chemistry of 7-Substituted Norbornenes: 7-Ketonorbornene

Studies in Mass Spectrometry-III. Triterpenoids : Structure Assignment to Some Friedelane Derivatives

Photochemical Rearrangements of Cross-Conjugated Cyclohexadienones. Formation of Spiro [4.5]dec-3-en-2-ones

Stereochemistry of Acetolysis of 2-Octyl p-Toluenesulfonate

Acidic Deacetylation of Sugar Acetates

Application of Mass Spectrometry to Structure Problems. The Structure of Quebrachidine

Erratum: On the Structure of Trilobine and Isotrilobine

Number 2

Boat-Chair Equilibrium in a 4-Piperidinol

The Configuration of the Carbomethoxy Group in Vobasine, Tabernaemontanine and Dregamine

Charge-Transfer Spectra of Conjugated Hydrocarbons, Their Heteroanalogues and Derivatives

The Cardiac Glycosides of Calotropis procera

The Structure of Asperuloside

Die Fragmentierung Eines -Oximino-Ketons

The Photosensitized Amidation of Aromatic Hydrocarbons

The Conformation of Six-Membered Rings Involving a Planar Group

Alkaloids of the Australian Rutaceae: Halfordia Scleroxyla-I. The Structure of N-Methylhalfordinium Chloride

Pyrylium Salts Formed by Diacylation of Alkenes-XII. Diacylation of 2-Methylpropenylbenzene

The Dipyrido [1,2-e: 2',1'-e] Imidazolium Cation, a New Aromatic Ring System

Flavonoid Pigments in the Marbled White Butterfly (Melanargia galathea seitz)

Phenylselen-Cyclopropane aus Phenylselen-Carben und Olefinen

Reactions of Enamines-II: A Novel Conversion of an Enaminoketone to a Chloroiminium Chloride

Die Bindung der Kohlenhydratkomponente in Proteinen

Number 3

Synthesis of 1,4-Dimethyl-6,7-(4'-Methylfurano-2',3')-Azulene (Linderazulene)

The Structure of Isopilocereine

Thermal Rearrangement of Xanthates to Dithiolcarbonates-II. Mechanism Study

Natural Products from Achillea lanulosa

Isolation and Properties of 1,1,2,3,3a,7a-Hexachloro-3a,4,7,7a-Tetrahydro-4,7-Methanoindene

Schlüsselbruchstücke in den Massenspektren von Alkaloiden-I

Schlüsselbruchstücke in den Massenspektren von Alkaloiden-II

Synthesis of Pratensein, 5,7,3'-Trihydroxy-4'-Methoxyisoflavone

Benz-Azpentalen-Salze

Mitraphylline and the Possible Existence of Its Optical Antipode

Number 4

Concerning the Reaction of Sulfonium Methylides with Conjugated Carbonyl Compounds

Studies in Mass Spectrometry-IV. Triterpenoids : Structure Assignment to Friedelan-Y-One (Y-al) and Derivatives

An Alternative Calculation and Reconsideration of Rates of Bromine Addition to 5,6-Unsaturated Steroids

Bridged Polycyclic Compounds-XX. The Cis-Stereochemistry of the Addition of Methanol and Water to Endo-Trimethylenenorbornene

Rearrangement During Reduction of Cis- and Trans-2-Phenylcinnamic Acids with Lithium Aluminium Hydride

Racemic Progesterone

The Stereochemistry of Rings A and B in 6-Substituted- 4-3-Ketosteroids. A Study of H Allylic Spin-Spin Coupling in Rigid Systems

The Diterpene Alkaloids: A Partial Synthesis of Atisine

A Novel Process for the Epimerization of Glucosepentaacetate Involving Imidazole Catalyzed Acyl Transfer

Components of the Heartwood of Dalbergia latifolia Roxb

Aromatic Oxygenation Patterns of Some Trioxylaryl Amaryllidaceae Alkaloids Belonging to the Hemi-Acetal and Lactone Group

The Nature of Sesquiterpenic Hydrocarbon Calarene and Structure of ß-Gurjunene

Charge Densities, Chemical Reactivity and Basicity of Purine

The Acid-Catalyzed Proton Exchange of Cyclopropane

A Correlation of Ease of Pyrolytic Cis Eliminations with Structure

Longicyclene, the First Teracyclic Sesquiterpene

Über eine Zwischenprodukt der Emetin-Synthese

Über eine Bequeme Synthese der Octahydro-Indo-Chinolizine

The Chemistry of Derivatives of 2-Benzal-1-Tetralone-IV. Elimination-Rearrangement Reaction of 2-Bromo-2-Benzyl-1-tetralone

Zur Struktur der Cobamid-Coenzyme

The Construction of the C/D Ring System Present in the Diterpenoid Alkaloids Atisine and Garryfoline

H Spin-Spin Coupling Across One Double and Four Single Bonds

Number 5

The Structure of Munetone

Tetrahydrofranklinone

The Structure of Lunarine

A New ortho-Effect in the Homolytic Arylation of Pyridine

Rapid Allylic Rearrangements in 2-Halo-3-Hydroxy-2,4-Dimethylcyclobutenones

o-Quinodimethane as an Intermediate in the Isomerization of Cis-4-Octene-1,7-Diyne

Cyanomaclurin

Reaction of Silicon Tetrachloride with Tertiary Butyl Acetate. A Novel Synthesis of Silicon Tetraacetate

A New Carbon-Carbon Condensation Via Cyclic Oxyphosphoranes. Tartaric Acids From a-Ketoesters

Über Tomatid-5-En-3ß-O1 aus Solarium dulcamara L. und Dessen Synthese

Phlebiarubrone, a Basidiomycete Pigment Related to Polyporic Acid

s-Carbon Participation in the Solvolysis of Organomercurials

Number 6

Fluorine-19 Resonance in Monofluoro Aromatic Compounds

On the Structure of Amidomycin and Valinomycin

Reactivity of Hydroxy and Alkoxy Radicals in Presence of Olefins and Oxidation-Reduction Systems. Introduction of Azido, Chloro and Alcyloxy Groups in Allylic Position and Azido-Chlorination of Olefins

The Synthesis of a Protected Heptapeptide Related to Evolidine: N-Benzyloxycarbonyl-L-Leucyl-L-Prolyl-L-Valyl-L-Asparaginyl-L-Leucyl-Lseryl-L-Phenylalanine Benzyl Ester

An Analogue of the Photo-Fries Rearrangement; The Photolysis of Vinyl Benzoate

Photolysis of Vinyl Benzoates

Photochemische Umsetzungen I. Triterpene VI. Photochemische Reaktionen mit 2-Diazo-Allo-Betulon

The Reaction Between Nitrosobenzenes and Alkenes

The Mechanism of the Reaction of Ferrocene with Free-Radical Reagents

Syntheses of Cadinanes. Synthetic Correlation of Absolute Configuration Between the Cadinane Sesquiterpenes and Monoterpenes of the p-Menthane Series

The Stereochemistry of Ethyleneimines Fused to Six-Membered Rings

The Structure of Tecomanine

Synthesis of the Thienotropylium Cation

Thermal Isomerization of Dimethyl Maleate

Number 7

Complexes Between Grignard Reagents and Ketones

Synthesis of a Degradation Product of Cephalosporin C and Related Sulfur-Containing a-Tetronic Acids

Derivatives of a-Tetronic Acid

The Metalation of Alkanes by Alkylpotassium Compounds

Denomination of Bromomethyltriphenylphosphonium Bromide with Triphenylphosphine in Alcohols

Cyclol Formation in Peptide Systems-III. Rearrangement of N-(ß-Hydroxypropionyl)-Piperidone Into a 10-Membered Cyclodepsipeptide

Mechanisms of Free-Radical Aromatic Substitution

Partial Structure of the Antibiotic Isoquinocycline B

The Constitution of Morellin

Number 8

Conformation and Anisotropy of Chemical Bonds in Cyclic Ethers Investigated by N.M.R. Spectroscopy

The Structure of Gypsosidetriterpenic Saponin from Gypsophila pacifica Kom.

…