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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Methyleneketenes and methylenecarbenes. X. Precursors for the generation of methyleneketene and deuterated methyleneketenes for microwave spectroscopy

GL Blackman, RD Brown, RFC Brown, FW Eastwood, GL McMullen and ML Robertson

Australian Journal of Chemistry 31(1) 209 - 213
Published: 1978

Abstract

The synthesis of a mixture of deuterated cyclopentadiene adducts (3) required for the pyrolytic generation of CHD=C=C=O and CD2=C=C=O is described. Methyleneketene is conveniently generated for microwave spectroscopy by flash vacuum pyrolysis of acrylic anhydride at 510- 560°. Pyrolysis of diphenylmethyl propiolate gives benzophenone and methyleneketene (or its decomposition products)as the major process, but minor processes leading to diphenylmethane, fluorene and 3-phenylphthalide also occur.

https://doi.org/10.1071/CH9780209

© CSIRO 1978

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