MASS SPECTROMETRY OF MECARBAM AND OF SOME RELATED O,O-DIALKYL S-(N-ETHOXYCARBONYL-N-METHYLCARBAMOYLMETHYL) AND S-METHYLCARBAMOYLMETHYL PHOSPHORODITHIOATES AND PHOSPHOROTHIOATES

J. Charalambous School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

C. G. Herbert School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

H. R. Hudson School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

M. Pianka School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

Mrs L. Powroznyk School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

J. C. Roberts School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

S. U. Sheikh School of Chemistry, The Polytechnic of North London, Holloway Road, London, N7 8DB

V. P. Lynch Murphy Chemical Ltd., Wheathampstead, St. Albans, Hertfordshire, AL4 8QU

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Abstract

The electron impact positive ion mass spectra of mecarbam and of a range of related phosphorodithioates and phosphorothioates containing substituted carbamoylmethyl groups are reported. All compounds exhibit molecular ion peaks and show fragmentation patterns which are characteristic of both the organophosphate and carbamoyl moieties. An unusual rearrangement involving phosphorus-sulphur fission and the apparent transfer of hydroxyl from the carbamoyl chain to phosphorus is discussed.

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MASS SPECTROMETRY OF MECARBAM AND OF SOME RELATED O,O-DIALKYL S-(N-ETHOXYCARBONYL-N-METHYLCARBAMOYLMETHYL) AND S-METHYLCARBAMOYLMETHYL PHOSPHORODITHIOATES AND PHOSPHOROTHIOATES

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MASS SPECTROMETRY OF MECARBAM AND OF SOME RELATED O,O-DIALKYL S-(N-ETHOXYCARBONYL-N-METHYLCARBAMOYLMETHYL) AND S-METHYLCARBAMOYLMETHYL PHOSPHORODITHIOATES AND PHOSPHOROTHIOATES

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