Results 201 to 210 of about 13,076 (231)

ChemInform Abstract: BRIDGED‐RING NITROGEN COMPOUNDS. PART 4. SYNTHESIS AND APPLICATIONS OF 8‐ETHOXYCARBONYL‐6,7‐DIHYDRO‐2‐METHOXYBENZOCYCLOHEPTEN‐5‐ONE; PREPARATION OF METHANOBENZAZOCINES AND ETHANOBENZAZEPINES

Chemischer Informationsdienst, 1980
AbstractAusgehend von dem Methoxybenzaldehyd (I) und dem Diester (II) wird nach angegebener Reaktionsfolge das Benzosuberon (IVb) dargestellt, aus dem über den Alkohol (Va) das Keton (Vc) zugänglich ist.
G. R. PROCTOR, F. J. SMITH
openaire   +1 more source

ChemInform Abstract: BRIDGED‐RING NITROGEN COMPOUNDS. PART 1. A SYNTHESIS OF A 2,3,4,5‐TETRAHYDRO‐1,4‐ETHANO‐1‐BENZAZEPIN‐5(1H)‐ONE

Chemischer Informationsdienst, 1979
AbstractDas Piperidinderivat (I) reagiert mit Dihydroresorcin zum Enamin (II), das in den Hydroxyester (III) übergeführt wird.
M. LENNON, G. R. PROCTOR
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Condensed cyclic and bridged-ring systems. Part IV. Stereochemically controlled synthesis of some endo-2-aryl-6-oxobicyclo[3.2.1]octanes and related compounds through intramolecular alkylations of γ^δ-unsaturated α′-diazomethyl ketones

J. Chem. Soc., Perkin Trans. 1, 1976
The 4-arylcyclohex-3-enecarboxylic acids (4a—d), prepared through a modified Diels–Alder reaction, have been converted via the corresponding diazomethyl ketones (5a—d) into cyclopropyl ketones (6a—d) and the 2-aryl-6-oxobicyclo[3.2.1]oct-2-ene derivatives (7a—d), by oxo-carbenoid addition and boron trifluoride–ether-catalysed cyclisation, respectively,
Usha R. Ghatak, Shaikh Khairul Alam, Prabir C. Chakraborti, Brindaban C. Ranu   +3 more
openaire   +1 more source

ChemInform Abstract: CONDENSED CYCLIC AND BRIDGED‐RING SYSTEMS. PART IV. STEREOCHEMICALLY CONTROLLED SYNTHESIS OF SOME ENDO‐2‐ARYL‐6‐OXOBICYCLO(3.2.1)OCTANES AND RELATED COMPOUNDS THROUGH INTRAMOLECULAR ALKYLATIONS OF ΓΔ‐UNSATURATED α′‐DIAZOMETHYL KETONES

Chemischer Informationsdienst, 1976
AbstractAus den Phenyl‐methyl‐ketonen (I) und dem Grignard‐Reagenz (II) werden die ungesättigten Alkohole (III) erzeugt und mit den Acrylaten (IV) zu den Phenylcyclohexencarbonsäureestern (V) (Ausbeuteangaben in g) umgesetzt; die daraus erhaltenen freien Säuren (VI) werden in die Diazoketone (VII) übergeführt, deren photoinduzierte Zersetzung in ...
U. R. GHATAK, S. K. ALAM, P. C. CHAKRABORTI, B. C. RANU   +3 more
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A CARBONYL BRIDGE COMPOUND IN WHICH THE BRIDGED RING IS SATURATED

The Journal of Organic Chemistry, 1955
C. F. H. ALLEN, J. A. VanALLAN
openaire   +1 more source

Bridged ring compounds. XVI. Stereoselectivity in expoxidation of bicyclic anhydrides

The Journal of Organic Chemistry, 1969
Leo H. Zalkow, S. K. Gabriel
openaire   +1 more source

Bridged-ring nitrogen compounds. Part 5. Synthesis of 2,6-methano-3-benzazonine ring-systems

Journal of the Chemical Society, Perkin Transactions 1, 1981
George R. Proctor, Francis J. Smith
openaire   +1 more source

Bridged-ring nitrogen compounds. Part 6. Synthesis of the 2,5-methano-3-benzazocine ring-system

Journal of the Chemical Society, Perkin Transactions 1, 1982
Stephen J. Miller, George R. Proctor, David I. C. Scopes   +2 more
openaire   +1 more source

Photocatalytic Dearomative Construction of Bridged-Ring Compounds

Chinese Journal of Organic Chemistry
Zhaoqing Xu, Xiaoyu Ren
openaire   +1 more source

Reactions of methyl β-vinylacrylate with β-dicarbonyl compounds--a new route to functionalized bridged ring systems

Tetrahedron Letters, 1968
S. Danishefsky, G. Koppel, R. Levine
openaire   +1 more source