and Deng J.F.: "Selectivity hydrogenation of cyclopentadiene to cyclopentene
over an amorphous NiB/SiO2 catalyst".
Therefore, a number of compounds, including flavonoids, iridoids, coumarins, anthraquinone-2-carboxlic acid, cyclopentene
derivatives, benzaldehyde derivatives, benzoic acid derivatives, [beta]-lapachone, and quinones, including naphthoquinones, furanonaphthoquinones, and anthraquinones, have been extracted from T.
Also, for monocyclic olefins cyclobutene (Figure S25) has lower activation barrier than the cyclopentene
(Figure S28); however, the cyclopentene
leads to a less stable product than the cyclobutene and 2-cyclohexenone has a lower activation barrier as compared to the parent ethylene.
15-Deoxy-[DELTA]12,14- prostaglandin J2 (15d-PGJ2) is an electrophilic cyclopentene
The spectrum bands of the DCPD monomer at 1572 and 1614 [cm.sup.-1] are assigned to the v(C=C) stretching vibrations of the norbomene and cyclopentene
dialdehydes from Tabebuia impetiginosa.
Balfour developed toughened poly(arylene ether) with improved transparency by adding radial and linear styrene-diene block copolymers, one or more optical enhancing agents such as alpha hydroxyl ketones, a hydrocarbon flow promoter, cyclopentene
, and other additives.
Vidari, "Columbetdione, a new cyclopentene
derivative from the fruiting bodies of Tricholoma columbetta (basidiomycetes)--structure and synthesis," European Journal of Organic Chemistry, no.
1-cadinene 14.09 1.00 Rt % Oxygenated monoterpenes (i) 1-Indanone 7.60 1.15 (ii) Linalool 7.85 2.34 (iii) 2,3,3-Trimethyl-3- 8.35 2.09 cyclopentene
acetaldehyde (iv) 5-Decene-1-ol 10.89 2.60 Rt % Oxygenated sesquiterpenes (i) Cedrene epoxide 18.94 2.79
The most relevant and diagnostic 1H NMR signals are those relative to the olefinic protons of the cyclopentene
and cyclohexene moieties found at [delta] = 5.94-6.15 (dd, J = 5 Hz in CD[Cl.sub.3]) and at [delta] = 5.66-6.05 (dd, J = 10 Hz in DMSO), respectively.
36, 84 (1970), Microwave Spectrum, Dipole Moment, and Conformation of Cyclopentene