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Keglevich, Gy.; Szelke, H., Science of Synthesis, (2007) 33, 740.
Another fascinating way of creating the 1,2-dihydrophosphete ring is via ring expansion by reacting cycloprop-2-enylidene(mesityl)phosphines 14 with azides, under mild conditions (Scheme 6).[6] A variety of phosphet-2(1H)-imines 15 can be prepared; however, the yields are not reported. The assigned structure of the ethoxycarbonyl-substituted product is supported by single crystal X-ray analysis. Formation of the ring-expanded product 15 can be explained assuming the intermediates 16 and 17.
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References
[6] | Meeeeee, M.; Meeee, M.; Meeeeeeäßee, M.; Meeeee, M., Meeeeeeeeee Meee., (8888) 88, 8888. |
[7] | Meeeeeeee, M.; Meeeeee, M.; Meeeee, M., M. Me. Meee. Mee., (8888) 888, 8888. |