Selenoketenyl and selenoalkyne complexes via the reactions of ketenyl complexes with Woollins’ reagent

Synthesis of Novel Vinylic P–Se Heterocycles from Selenation of Alkynes by [PhP(Se)(μ‐Se)]2

“…[8,9] WR has been shown to act as an efficient selenium transfer reagent for the synthesis of a range of selenoamides and selenoaldehydes by, for example, simple O/Se exchange reactions or reaction with ArCN followed by hydrolysis. [10][11][12][13] We have also reported the use of FcP(S)S 2 P(S)Fc (Fc = ferrocenyl) and WR in the preparation of novel metal complexes, C-P-S and C-P-Se heterocycles by reaction with a variety of reactive organic substrates/functionalities including CS 2 , C=O, C=C double bond and CϵN triple bonds. [8,[14][15][16][17][18][19] To date, no general method for the synthesis of vinylic selenium-containing heterocycles has been established.…”

A New Synthesis of (PhPSe2)2 (Woollins Reagent) and Its Use in the Synthesis of Novel P–Se Heterocycles

“…Baxter et al, [6] Bhattacharyya et al [7] and Bethke et al [8a] have reported the selenation reactions of WR in the synthesis of selenoketenyl complexes and a range of selenoamides and selenoaldehydes, and Knapp and Darout very recently described its use for the selenation of carboxylic acids.…”

The Reactivity of [PhP(Se)(μ-Se)]2 and (PhP)3Se2 Towards Acetylenes and Cyanamides: X-ray Crystal Structures of Some P-Se-C and P-Se-C-N Heterocycles

“…[1,2] Investigations by ourselves and others have established that [PhP(Se)(m-Se)] 2 (4; ™Woollins Reagent∫) is an excellent material both for synthesis of P-Se-C-N-, P-Se-N-and P-Se-C-containing heterocycles [3±6] and the selenation of carbonyl groups to selenocarbonyls. [7,8] Of the phospholanes 1 ± 3, we have found that Scheme 1. Heterocycles 1 ± 4 from the oxidation of (PhP) 5 with selenium.…”