Comparison of the mass spectra of 6-thio
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Felix Bergmann; Miriam Rahat; Arie Frank; Joseph Deutsch
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Article
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1982
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John Wiley and Sons
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English
β 350 KB
## Abstract Under electron impact, 6βthiotheophyllines eliminate various fragments from the pyrimidine moiety. In a retro DielsβAlder reaction, they lose the fragment Xο£ΎCο£ΎNCH~3~ from positions 1 and 2 of the pyrimidine ring. In 6βsulfinyltheophyllines, the sulfinyl group is the main target for frag