Electron impact mass spectral interpretation for some thiophosphoryl-p-acetylaminobenzenesulfonamides

2001 ◽  
Vol 15 (9) ◽  
pp. 721-729 ◽  
Author(s):  
I. Fenesan ◽  
Rodica Popescu ◽  
C.T. Supuran ◽  
Simona Nicoara ◽  
Monica Culea ◽  
...  
Keyword(s):  
Electron Impact ◽  
Mass Spectral ◽  
Spectral Interpretation ◽  
Electron Impact Mass ◽  
Impact Mass

Survey of Computer Aided Methods for Mass Spectral Interpretation

1981 ◽  
Vol 35 (3) ◽  
pp. 255-266 ◽  
Author(s):  
David P. Martinsen
Keyword(s):  
Mass Spectra ◽  
Search Pattern ◽  
Comprehensive Treatment ◽  
Mass Spectral ◽  
Spectral Interpretation ◽  
Interpretive Methods ◽  
The Status ◽  
Electron Impact Mass ◽  
Impact Mass

Recent studies in the application of computerized techniques to mass spectral interpretation have been reviewed. The techniques have been divided into library search, pattern recognition, and interpretive methods. The more common methods in use in each category, as well as the more recent methods, are discussed. Earlier review articles are referenced for a more comprehensive treatment of earlier methods. The status of the large libraries of electron impact mass spectra is discussed and a number of attempts at improving the quality of those libraries are detailed.

Electron impact mass spectral fragmentation of chiral bisbenzoxazole, bisbenzothiazole and biscarbamide derivatives of 2,2-dimethyl-1,3-dioxolane

2002 ◽  
Vol 16 (12) ◽  
pp. 1174-1179 ◽  
Author(s):  
Jiaxi Xu ◽  
Peng Jiao ◽  
Dayi Deng ◽  
Qihan Zhang ◽  
Chun Wai Tsang ◽  
...  
Keyword(s):  
Electron Impact ◽  
Mass Spectral Fragmentation ◽  
Mass Spectral ◽  
Electron Impact Mass ◽  
Derivatives Of ◽  
Impact Mass

Electron-impact mass spectral study of 2-allyloxy-6-phenyl-4-trifluoromethyl pyridines and N-allyl-6-phenyl-4-trifluoromethyl-2(1H)-pyridones

1998 ◽  
Vol 12 (10) ◽  
pp. 651-657 ◽  
Author(s):  
S. Vivekananda ◽  
A. Chandra Sheker Reddy ◽  
B. Narsaiah ◽  
R. V. Venkataratnam ◽  
R. Srinivas
Keyword(s):  
Electron Impact ◽  
Spectral Study ◽  
Mass Spectral ◽  
Mass Spectral Study ◽  
Electron Impact Mass ◽  
Impact Mass

Metal salt catalyzed carbenoids. XVIII. The electron impact mass spectral behavior of diazocarbonyl compounds. I.

1984 ◽  
Vol 62 (3) ◽  
pp. 554-560 ◽  
Author(s):  
D. S. Wulfman ◽  
James Roberts ◽  
Dennis K. Henderson ◽  
J. C. Romine ◽  
R. S. McDaniel Jr. ◽  
...  
Keyword(s):  
Electron Impact ◽  
Metal Salt ◽  
Spectral Studies ◽  
Spectral Behavior ◽  
Mass Spectral ◽  
Ethyl Diazoacetate ◽  
Methyl Diazoacetate ◽  
Electron Impact Mass ◽  
Impact Mass

Electron impact (EI) mass spectral studies of methyl diazoacetate, ethyl diazoacetate (1), methyl diazoacetoacetate (2), and dimethyl diazomalonate (3) indicate that loss of N2 is exceedingly difficult from the parent ion and was observed only with 3. Diazoacetylacetone exhibits an appreciable (M − 28)+. ExactMass and metastable transitions indicate fragmentation occurs in part via 1,2,3-oxadiazolium ion-radicals (6) or α-lactones (7) to furnish N2O and hyponitrite esters. (M − 28)+ from 1 results from loss of ethylene.

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