Refine
Has Fulltext
- yes (116)
Is part of the Bibliography
- yes (116)
Year of publication
Document Type
- Journal article (114)
- Report (1)
- Review (1)
Keywords
- Organische Chemie (84)
- 1 (8)
- 3 (7)
- Chemie (7)
- Diels-Alder reactions (5)
- 4-0xadiazin-6-ones (3)
- 2 (2)
- 4-0xadiazine-2-carboxylate (2)
- 6 (2)
- Carbocations (2)
- Enol Iactones (2)
- Ketenes (2)
- hexahydro- (2)
- methyl 6-oxo-5-phenyl- (2)
- preparation (2)
- y-oxo- (2)
- 0]hexane (1)
- 1' -c]naphthalene (1)
- 1-aryl- (1)
- 1-dibromo-1a (1)
- 10 (1)
- 11-dihydro- / 1-Pyrazoline (1)
- 2-Bismethylenecyclobutanes (1)
- 2-Bismethylenecyclohexane (1)
- 2-Cyclopentanedione derivatives (1)
- 2-Norcaranols (1)
- 2-α:2' (1)
- 3-Azabicyclo{3 (1)
- 3-Methenonaphthalenes (1)
- 3-aryl- (1)
- 3-cyclohexadiene (1)
- 3-n-butyl-N-phenyl- (1)
- 4 (1)
- 4-Pentadienylamine (1)
- 4-tetrahydro- (1)
- 4</sup>.0<sup>3 (1)
- 4]0xadiazino[4 (1)
- 4]non-7-en-6-ylpotassium (1)
- 4a (1)
- 5 (1)
- 5-b]isoquinolin-1-one derivatives (1)
- 5-dinitrobenzoates (1)
- 5</sup>]beptanes (1)
- 5H-Dibenzo[a (1)
- 5]cyclohepta[ 1 (1)
- 6-Norpinanols (1)
- 6-Norpinyl 3 (1)
- 6-Thiatricyclo[3.2.1.o 2.7 ]oct-3-ene 6 (1)
- 6-aryl- (1)
- 6-dibromo-3-phenyl- (1)
- 6-dioxide (1)
- 6-phenyl (1)
- 6H-1 (1)
- 6a-Tetrahydro-2H-cyclobuta[b]pyrans (1)
- 7 (1)
- 7-Norcaranylidene carbenoid (1)
- 7-dibromo (1)
- 7</sup>]heptane derivatives (1)
- 7b-tetrahydro- (1)
- 8 (1)
- 8-Tetrahydro-3H-2-benzopyrans (1)
- 8a-Tetrahydro-2H-1-benzopyran (1)
- Adipic acid (1)
- Allenes (1)
- Anchimeric assistance in solvolysis (1)
- Barbaralane derivatives (1)
- Benzocycloheptene derivatives (1)
- Bicyclo[1.1.0]butane derivatives (1)
- Bicyclo[1.1.0]butanes (1)
- Bicyclo[1.1.0]butylcarbinyl sulfonates (1)
- Bicyclo[2.1.l]hexan-5-one (1)
- Bicyclo[3.2.0.0<sup>2 (1)
- Bicyclo[3.2.0]hept-6-ene derivatives (1)
- Bicyclo[3.2.1]oct-3-en-2-yl anions (1)
- Bisbenzo[ 4 (1)
- Butadien (1)
- Carbene insertion (1)
- Cycloadditions (1)
- Cycloallene dimerization (1)
- Cyclobuta[c}pyridines (1)
- Cyclobutylcarbinyl sulfonates (1)
- Cyclohept-3-en-1-ols (1)
- Cyclopropanetetracarbonitrile derivatives (1)
- Electron demand in ditosylates (1)
- Electron transfer (1)
- Halonium ions (1)
- Homo Diels-Alder reactions (1)
- Homoaromaticity in carbanions (1)
- Homobenzvalene (1)
- Isoquinolines (1)
- Lactone conformations (1)
- Line-shape analysis (1)
- Long-range coupling constants (1)
- Migratory aptitudes in carbocations (1)
- Neighbouring group participation (1)
- Nonbonded Interactions (1)
- Norcaranes (1)
- Norpinanes (1)
- Octavalen (1)
- Photochemistry (1)
- Photoelektron (1)
- Radical-ion pair (1)
- Rearrangement of carbocations (1)
- Spirotetracyclo[4.1.0.0<sup>2 (1)
- Tetrakis(arylmethylene)ethane diradical (1)
- Tricyclo[3.3.1.0 2 (1)
- Tricyclo[4.1.0.0<sup>2.7</sup>]heptanes (1)
- Urazoles (1)
- [1 (1)
- [2 + 2]- and [4 + 2]- (1)
- alpha (1)
- bicyclic (1)
- classical and nonclassical (1)
- conformation (1)
- cyclic / 1-0xa-2 (1)
- d]cycloheptene (1)
- generation and rearrangement (1)
- highly substituted (1)
- hydrolysis (1)
- kinetics of thermolysis (1)
- lH-Cyclopropa[a]naphthalenes (1)
- mtrogen extruston (1)
- phenyl-substituted (1)
- photochemical (1)
- polycyclic (1)
- rearrangement (1)
- six-membered (1)
- solvolysis of (1)
- substituted (1)
- substituted 2-oxo- dimethyl esters (1)
- y-Oxoketenes (1)
- ß-Lactones (1)
- ß-unsaturated (1)
- β-Lactones (1)
- δ-Lactones (1)
- δ-chloro- (1)
Institute
- Institut für Organische Chemie (116) (remove)
No abstract available
No abstract available
No abstract available
No abstract available
No abstract available
No abstract available
Abstraction of an allylic hydrogen atom in homobenzvalene (4) either in solurion by photolyticaßy generated tert-butoxyl radicals or in an adamantane matrix by X-rays produces the homobcnzvalenyl radical (5). which tbennally rearranps · to tbe tropylium ndical (1). In solution tbe activation cnergy for the rate determined step of the reaction sequence was detennined· to be 13.4 ± O.S kcal/mol.
The transient yellow color observed in the cycloaddition of homobenzvalene (HB) with tetracyanoethylene (TCNE) is associated with the charge-transfer complex [HB, TCNE). The deliberate photoexcitation of [HB,TCNE) affords a mixture of charge-transfer cycloadducts (1, 2, and 3) that differs from that obtained in thermal cycloaddition. The relationship of {HB t TCNE•) radical-ion pair (as the critical reactive intermediate in charge-transfer cycloaddition) to the activation process for thermal cycloaddition is discussed.
No abstract available
No abstract available
No abstract available
Norpinene (Bicyclo[3.1.1]hept-2-ene) aus Homobenzvalenen (Tricyclo[4.1.0.0\(^{2,7}\)]hept-3-enen)
(1986)
No abstract available
No abstract available
Fünfgliedrige Carbocyclen sind Bauelemente zahlreicher NaturstofTe und daher attraktive Syntheseziele. Da bisher kein Syntheseverfahren mit großer Anwendungsbreite bekannt ist, sind neue Methoden willkommen. Wir berichten hier über Umsetzungen des Titelheterocyclus 1 mit l,3-Butadienen 1; diese Reaktionen, obwohl vielstufig, liefern im Eintopfverfahren konjugierte und nichtkonjugierte Cyclopentenone und gestatten auch die Fünfringanellierung.