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Generation of methylenephosphine oxides by thermal fragmentation of derivatives of the 2-phosphabicyclo [2.2.2] octa-5,7-diene oxide ring system

✍ Scribed by György Keglevich; Kálmán Újszászy; Louis D. Quin; Gyöngyi S. Quin

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 410 KB
Volume: 4
Category: Article
ISSN: 1042-7163
DOI: 10.1002/hc.520040607

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✦ Synopsis

Differential thermal analysis and differential scanning calorimetry showed that the title compounds decomposed at 240-260°C with release of the fragment

RP(0) = CH,. Mass spectral studies also showed this to be a fragmentation pathway. The extruded methylenephosphine oxide could be trapped with ethanol, hydroquinone, or by reaction with the surface OH groups of silica gel.

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