Results 251 to 260 of about 19,882 (280)

Thebaine Cyclopropanation.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
E. E. Schultz, M. M. Shakirov, I. Yu. Bagryanskaya, Yu. V. Gatilov, G. A. Tolstikov, V. N. Kalinin, H. Schmidhammer   +6 more
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ChemInform Abstract: CYCLOPROPANATIONS WITH DIMETHYLCARBENE

Chemischer Informationsdienst, 1981
AbstractDurch Addition von Dimethylcarben, intermediär gebildet aus 2,2‐Dibrompropan (II) und Butyllithium (III), an die Alkene (I) werden die Cyclopropane (IV) erhalten.
P. Fischer, G. Schaefer
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The Protonation of Gaseous Cyclopropane

Chemistry - A European Journal, 2001
The protonation of cyclopropane by gaseous Brønsted acids of varying strength in radiolytic experiments at atmospheric pressure leads to two distinct C3H7- isomers that have been sampled by their reaction with benzene. The neutral end products, nC3H7-C6H5 and iC3H7-C6H5, arise from the electrophilic aromatic substitution reaction with the cC3H7+ and ...
CHIAVARINO, Barbara, CRESTONI, Maria Elisa, Andrey A. Fokin, FORNARINI, Simonetta   +3 more
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ChemInform Abstract: A Novel Cyclopropanation.

ChemInform, 1996
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
T. J. Connolly, Richard Francis Langler, S. Copp, Michael J. Zaworotko, D. L. Reid, S. D. Christie, T. M. Bostick   +6 more
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Stereoselective Cyclopropanation Reactions

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
André B. Charette, Jean-François Marcoux, Carmela Molinaro, Hélène Lebel   +3 more
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Bonding in cyclopropane

Journal of the American Chemical Society, 1993
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Jason G. Hamilton, William E. Palke
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Spectra and Structure of Crystalline Cyclopropane and Cyclopropane-D6

The Journal of Chemical Physics, 1969
Infrared and Raman spectra of polycrystalline C3H6 and C3D6 were measured between 10 and 3500 cm−1 at 85°K. Infrared spectra of mixed C3H6 and C3D6 crystals were also obtained. From these measurements, an assignment of the origin of the multiplet splittings is proposed.
John B. Bates, William Hayden Smith, Donald E. Sands   +2 more
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Transformation of thioacetals to cyclopropanes

Tetrahedron Letters, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Hirohisa Shimokawa, Takeshi Takeda, Akira Tsubouchi, Koutaro Arai   +3 more
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Cyclopropanation of benzylidenemalononitrile with dialkoxycarbenes and free radical rearrangement of the cyclopropanes

Canadian Journal of Chemistry, 2001
Thermolysis of 2-cinnamyloxy-2-methoxy-5,5-dimethyl-Δ3-1,3,4-oxadiazoline (1a) and the analogous 2-benzyloxy-2-methoxy compound (1b) at 110°C, in benzene containing benzylidenemalononitrile, afforded products of apparent regiospecific addition of methoxycarbonyl and cinnamyl (or benzyl) radicals to the double bond.
Nadine Merkley, John Warkentin, Paul C Venneri   +2 more
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The cyclopropanes

1991
Publisher Summary This chapter describes the methods of construction of cyclopropane rings. This is followed by a discussion on the utility of cyclopropanes in organic synthesis with emphasis on the cleavage of the three-membered carbocycles by various reagents. The chapter also outlines several important earlier developments in this field.
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