Results 301 to 310 of about 797,239 (340)

Non-enzymatic methylcyclization of alkenes. [PDF]

open access: yesNat Chem
Plangger I   +5 more
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Scholl Cyclizations of Aryl Naphthalenes: Rearrangement Precedes Cyclization

The Journal of Organic Chemistry, 2015
In 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
openaire   +3 more sources

Indium-mediated atom-transfer cyclizations and reductive cyclizations

Tetrahedron Letters, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Nobuaki Nishimori   +4 more
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Cyclization of allylthiophenethiols

Chemistry of Heterocyclic Compounds, 1979
AbstractDie 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, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Che‐Ping Chuang   +2 more
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Myers-Saito cyclization [PDF]

open access: possible, 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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Cyclization Reactions

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.
openaire   +1 more source

The cyclization of peptides and depsipeptides

Journal of Peptide Science, 2003
AbstractConstricting 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, 1976
AbstractCertain 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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Cyclo‐ and cyclized diene polymers. VIII. Cyclization of polybutadienes and ir spectra of cyclized polybutadiene

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
openaire   +2 more sources

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