Notizen: Phosphorverbindungen ungewöhnlicher Koordination, 12. Diels-Alder-Reaktionen mit tBu–C ≡ P – ein ergiebiger Weg zu λ3-Phosphininen/ Phosphorus Compounds with Unusual Coordination, 12. Diels-Alder Reactions with tB u–C≡ P–a Lucrative Access to λ3-Phosphinines

Abstract

Abstract Diels-Alder reactions of the phosphaalkyne 4 with the cyclic 1,3-dienes 5 generate the adducts 6 which decompose spontaneously under elimination of “X ” to yield the λ3-phosphinines 7. The bicyclic 9 decomposes into 7b on flash pyrolysis