Cumulated Ylides, XIV - Phosphacumulene Ylides - Building Blocks for the Synthesis of Heterocyclic Compounds
Phosphacumulene ylides 1 and acidic compounds 4 combine to give phosphoranes 5, which cyclize by an intramolecular reaction (mostly Wittig reaction) with formation of heterocycles 7.
Bestmann, Hans Juergen,Schmid, Guenter,Sandmeier, Dieter,Schade, Gerold,Oechsner, Helmut
p. 1709 - 1719
(2007/10/02)
PREPARATION AND REACTIONS OF TRIPHENYLARSORANYLIDENEKETENE
Preparation and some reactions of the first cumulated ylide of arsenic, viz. triphenylarsoranylideneketene are described.
Bestmann, H. J.,Bansal, R. K.
p. 3839 - 3842
(2007/10/02)
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