90162-45-1Relevant academic research and scientific papers
Investigations into the Natural Occurrence of 1-Phenylethyl Acetate (Styrallyl Acetate)
Bitterling, Hannes,Brückner, Stephan I.,Carle, Reinhold,Hartmann, Beate,Krammer, Gerhard,Meier, Lars,Ongouta, Jekaterina,Sch?fer, Uwe,Steingass, Christof B.
, p. 8613 - 8620 (2020)
So far, the occurrence of the flavor constituent 1-phenylethyl acetate in a natural source has not been unambiguously confirmed. The present work provides the detailed identification of 1-phenylethyl acetate from clove (Syzygium aromaticum (L.) Merr. & L.
Elucidation of differential accumulation of 1-phenylethanol in flowers and leaves of tea (Camellia sinensis) plants
Dong, Fang,Zhou, Ying,Zeng, Lanting,Peng, Qiyuan,Chen, Yiyong,Zhang, Ling,Su, Xinguo,Watanabe, Naoharu,Yang, Ziyin
, (2016)
1-Phenylethanol (1PE) is a major aromatic volatile in tea (Camellia sinensis) flowers, whereas it occurs in a much smaller amounts in leaves. Enzymes involved in the formation of 1PE in plants and the reason why 1PE differentially accumulates in plants is
Characterization, via ESR Spectroscopy, of Radical Intermediates in the Photooxidation of Arylcarbinols by Ceric Ammonium Nitrate
Grossi, Loris,Strazzari, Samantha
, p. 2748 - 2754 (2007/10/03)
The photooxidation by ceric ammonium nitrate (CAN) of several aryl and naphthylcarbinols has been studied by means of ESR spectroscopy. For all the investigated arylcarbinols, but not for the naphthyl derivatives, it has been possible to detect radical intermediates deriving from the parent alkoxyl radicals. In particular, in the photooxidation of 1,1-diphenylethanol, a bridged-radical intermediate has been detected. The assignment has been validated through experiments with two different labeled compounds: the 1,1-[2′, 3′, 4′, 5′, 6′, 2″, 3″, 4″, 5″, 6″-2H10]diphenylethanol and the 1,1-diphenyl[2, 2, 2-2H3]ethanol. A similar bridged radical has been found to be formed in the photooxidation of triphenylmethanol, while, for the 1,1-diphenylpropanol, the only detectable species has been the ethyl radical deriving from a competitive β-scission process. Finally, for the 2-phenylpropan-2-ol (cumyl alcohol), two radical species have been identified: the methyl, deriving from the β-scission process, and the cyanomethylene, deriving from H-abstraction of the cumyloxyl radical from the solvent. A kinetic study on the competition of the two processes has also been conducted and the parameters of the Arrhenius equation for the latter process have been estimated.
CONFORMATIONAL ORDER IN CRYSTALLINE STATES AND GELS OF ISOTACTIC, SYNDIOTACTIC AND ATACTIC POLYSTYRENES STUDIED BY VIBRATIONAL SPECTROSCOPY
Nakaoki, Takahiko,Kobayashi, Masamichi
, p. 315 - 331 (2007/10/02)
Stable conformations and their sequential order of isotactic (IPS), syndiotactic (SPS) and atactic polystyrenes (APS) in various aggregation states have been investigated by infrared (IR) spectroscopy, 13C NMR and X-ray diffraction.It has been demonstrated that the partially ordered skeletal conformation existing in IPS/CS2 gels of a (3/1) helix (TG) type having the pendant phenyl groups oriented in a disordered fashion, rather than the near-TT form proposed previously for IPS/decalin gels.The process of conformational change during gelation of IPS/CS2 and APS/CS2 systems has been followed by IR spectroscopy, and it has been concluded that the construction of regular sequences of a particular conformation promotes the gelation of both crystallizable and non-crystallizable polystyrenes.As-cast film specimens prepared from a chloroform solution are found to be a crystalline polymer-solvent complex (the γ phase) having a TTGG conformation.On heating, the γ phase transforms to a β phase at about 120 deg C, accompanied by removal of the solvent, while the TTGG conformation is retained.On further heating, the β phase transforms to an α1 or α2 phase at about 200 deg C accompanied by a change in conformation from TTGG to TT.The process of conformational change (in both type and sequence) during these phase transformations has been clarified by IR spectroscopy.
On the Electron Impact Induced Hydroxyl Loss from o-Nitrostyrene
Depke, Gisbert,Klose, Walter,Schwarz, Helmut,Blum, Wolfgang,Richter, Wilhelm J.
, p. 568 - 571 (2007/10/02)
Unimolecular hydroxyl (OD.) loss form regio- and stereo-specifically labelled o-nitrostyrenes 1a, 1c and 1d results in the formation of an ion which upon collisional activation gives identical mass spectra.Suggestions are made which aim at explaining: (i) the loss of stereochemical integrity of the diastereotopic methylene hydrogens in the course of hydroxyl elimination; and (ii) to account for the collision induced losses of CO and HCN from the (1+) ion.
