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Electron impact induced fragmentation of some cyclic bisthioacylals

โœ Scribed by J. Herman Schauble; Wm. A. van Saun; Vincent T. Spaziano

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
199 KB
Volume
16
Category
Article
ISSN
1076-5174

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โœฆ Synopsis

I 1 mlz 386 (Cz6H4zS) O=&--XH, Scheme 1

grounds. Again the ion peak at mlz 384 in 1 is 23 times more intense than the same peak in 2. This too can be explained on the basis of steric grounds. Thus the spectra can be related to the configuration at the spirane carbon.

Experimental

The mass spectra were measured on a Varian MAT-311(A) mass spectrometer at 70 eV using the direct insertion technique at a source temperature of about 120ยฐC. The molecular formulae of all the ions mentioned in the text were established by accurate mass measurement.

Compounds 1 and 2 were prepared according to the procedure described2 and the structure of these compounds were established on the basis of spectral e ~i d e n c e . ~ m / z 384 and m / z 369 CsH,, I O=C-CH=S '3 Scheme 2 We are grateful to Professor W. Rahman References and Professor M. S. Ahmad for provision of ncecessary facilities and useful discussion.

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