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- Arkhypchuk, Anna I., et al.
(author)
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Cascade Reactions Forming Highly Substituted, Conjugated Phospholes and 1,2-Oxaphospholes
- 2012
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In: Angewandte Chemie International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 51:31, s. 7776-7780
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Journal article (peer-reviewed)abstract
- The reaction of a phospha-Wittig–Horner reagent with diacetylenic ketones (see scheme) results in a cascade of reactions that can lead to both an oxaphosphole-terminated cumulene system and an alkene-bridged bis-phosphole. The reaction outcome is determined by the nature of the acetylene termini, with phenyl groups stabilizing a carbene intermediate that dimerizes to give the bis-phosphole product.
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