Gas Chromatographic, Infrared Proton Magnetic Resonance, Mass Spectral, and Threshold Analyses of All Pentyl Acetates

1966 ◽  
Vol 14 (3) ◽  
pp. 253-262 ◽  
Author(s):  
Roy Teranishi ◽  
R. A. Flath ◽  
D. G. Guadagni ◽  
R. E. Lundin ◽  
T. R. Mon ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Mass Spectral

Synthesis of phenethanolamine derivatives with potential β-adrenergic antagonistic activity

1975 ◽  
Vol 28 (5) ◽  
pp. 1023 ◽  
Author(s):  
SJ Pasaribu ◽  
LR Williams
Keyword(s):  
Magnetic Resonance ◽  
Ring Opening ◽  
Proton Magnetic Resonance ◽  
Mass Spectra ◽  
Antagonistic Activity ◽  
Spectral Studies ◽  
Aryl Ring ◽  
Mass Spectral

The mass spectra of bromonitroacetophenones, intermediates in the synthesis of phenethanolamine derivatives containing a nitro and bromo group in the aryl ring, have been studied. The acetophenones were converted into the corresponding α,β-epoxystyrenes, which were then treated with various amines, and proton magnetic resonance and mass spectral studies were used to confirm the direction of ring opening and purity of the products.

Trimeric products from the free radical oxidation of (Z)-isoeugenol

1976 ◽  
Vol 29 (5) ◽  
pp. 1127 ◽  
Author(s):  
IJ Miller
Keyword(s):  
Free Radical ◽  
Magnetic Resonance ◽  
Spectral Properties ◽  
Proton Magnetic Resonance ◽  
Free Radical Oxidation ◽  
Oxidation Products ◽  
Radical Oxidation ◽  
Mass Spectral ◽  
Radical Coupling

Four trimeric oxidation products have been isolated from the reaction between isoeugenol and tri-t-butylphenoxyl radical in methanol, and structures for these have been proposed on the basis of their proton magnetic resonance and mass spectral properties. All linkages were those expected from radical coupling, and one of the products was an acetal. Thus a route to the formation of ketones in lignin is demonstrated.

STEROIDS AND RELATED NATURAL PRODUCTS. XXV PHOTOCHEMICAL TRANSFORMATION OF 3β-NITRITO-5α-LANOSTANE

1965 ◽  
Vol 43 (10) ◽  
pp. 2872-2878
Author(s):  
George R. Pettit ◽  
Raymond E. Kadunce ◽  
Paul. Sunder-Plassmann ◽  
John. Occolowitz
Keyword(s):  
Magnetic Resonance ◽  
Ultraviolet Irradiation ◽  
Photochemical Reaction ◽  
Proton Magnetic Resonance ◽  
Reaction Pathway ◽  
Spectral Studies ◽  
Photochemical Transformation ◽  
Photolysis Product ◽  
Mass Spectral ◽  
Phenylhydrazone Derivatives

Ultraviolet irradiation of 3β-nitrito-5α-lanostane was found to follow an unusual reaction pathway and yield 2-oximo-3-oxo-3,4-seco-5α-lanostane (IV). The new aldehyde was easily converted to oxime and phenylhydrazone derivatives. Acetylating the photolysis product led to an oxime acetate (IX) which readily rearranged to 1-cyano-3,4-seco-5α-lanostane (III). Confirmation for the structural assignments was obtained from a series of proton magnetic resonance and mass spectral studies. Application of the new photochemical reaction was suggested to preparation of certain aldehydes otherwise accessible only with difficulty.

scholarly journals Imaging intelligence with proton magnetic resonance spectroscopy

Intelligence ◽  
2009 ◽  
Vol 37 (2) ◽  
pp. 192-198 ◽  
Author(s):  
Rex E. Jung ◽  
Charles Gasparovic ◽  
Robert S. Chavez ◽  
Arvind Caprihan ◽  
Ranee Barrow ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Proton Magnetic Resonance ◽  
Proton Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy
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