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Non-enzymatic methylcyclization of alkenes. [PDF]
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Scholl Cyclizations of Aryl Naphthalenes: Rearrangement Precedes Cyclization
The Journal of Organic Chemistry, 2015In 1910, Scholl, Seer, and Weitzenbock reported the AlCl3-catalyzed cyclization of 1,1'-binaphthyl to perylene. We provide evidence that this classic organic name reaction proceeds through sequential and reversible formation of 1,2'- and 2,2'-binaphthyl isomers.
Erin C. McLaughlin +4 more
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Indium-mediated atom-transfer cyclizations and reductive cyclizations
Tetrahedron Letters, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
Nobuaki Nishimori +4 more
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Cyclization of allylthiophenethiols
Chemistry of Heterocyclic Compounds, 1979AbstractDie durch Umlagerung von Allylthienylsulfiden (I) gebildeten Allylthiophenthiole (II) cyclisieren beim Erhitzen in tertiären Basen wie N,N‐Dimethylanilin, Chinolin, Tri‐n‐butylamin oder in Hexamethylphosphor säuretriamid bzw. in m‐Xylol zu Gemischen von Dihydrothienothiophenen (III) und Thienodihydrothiopyranen (IV).
V. F. Ionova +4 more
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Cyclization Reactions of Methylthioacetanilides.
ChemInform, 2003AbstractFor Abstract see ChemInform Abstract in Full Text.
Che‐Ping Chuang +2 more
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, 2002 Construction of substituted arenes through the thermal or photochemical cycloaromatization of allenyl enynes in the presence of a H. donor such as 1,4- cyclohexadiene. Cf. Bergman cyclization and Schmittel cyclization.
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2020
Advance Warning! This is a problem without many clear answers. That doesn’t mean we cannot use it to practise the basics. In this case, the basics are correct curly arrows and consideration of the shape of a compound when it reacts.
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Advance Warning! This is a problem without many clear answers. That doesn’t mean we cannot use it to practise the basics. In this case, the basics are correct curly arrows and consideration of the shape of a compound when it reacts.
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The cyclization of peptides and depsipeptides
Journal of Peptide Science, 2003AbstractConstricting the peptide backbone into a more defined conformational form through cyclization is an activity evolved in nature and in synthetic work, the latter straddling only the most recent decades. The resulting conformational constraints increase the probability of an optimum response with bio‐receptors.
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Biomimetic polyene cyclizations
Bioorganic Chemistry, 1976AbstractCertain polyenic substances having trans olefinic bonds in a 1,5 relationship can be induced to undergo stereospecific, non‐enzymic, cationic cyclization to give polycyclic products with all‐trans (“natural”) configuration. These transformations appear to mimic in principle the biogenetic conversion of squalene into polycyclic triterpenoids ...
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Journal of Polymer Science Part C: Polymer Symposia, 1967
AbstractCyclization of cis‐1, 4 and trans‐1, 4‐polybutadiene as of poly (2,3‐dimethyl butadiene‐1,3) was carried out with H2S4 as the cyclization agent. The decrease of the original unsaturation as well as of total unsaturation were measured with IR spectroscopy and the iodine monochloride method, respectively. The kinetics of cyclization were measured
M. Štolka +4 more
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AbstractCyclization of cis‐1, 4 and trans‐1, 4‐polybutadiene as of poly (2,3‐dimethyl butadiene‐1,3) was carried out with H2S4 as the cyclization agent. The decrease of the original unsaturation as well as of total unsaturation were measured with IR spectroscopy and the iodine monochloride method, respectively. The kinetics of cyclization were measured
M. Štolka +4 more
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