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PCl3- and organometallic-free synthesis of tris(2-picolyl)phosphine oxide from elemental phosphorus and 2-(chloromethyl)pyridine hydrochloride |
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| Authors: | Svetlana F Malysheva Nataliya A Belogorlova Vladimir A Kuimov Yurii I Litvintsev Irina V Sterkhova Alexander I Albanov Nina K Gusarova Boris A Trofimov |
| Institution: | A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Science, 1 Favorsky Str., 664033 Irkutsk, Russian Federation |
| Abstract: | In the superbase KOH/H2O/toluene/phase-transfer catalyst system, 2-picolyl chloride, generated in situ from 2-(chloromethyl)pyridine hydrochloride, reacts with elemental phosphorus at 65–95?°C for 3?h to afford tris(2-picolyl)phosphine oxide in 50% yield. Single crystal X-ray analysis of the latter revealed one polymorph form of this tertiary phosphine oxide. |
| Keywords: | Tris(2-picolyl)phosphine oxide Red phosphorus Superbase 2-(Chloromethyl)pyridine hydrochloride |
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