Step-wise sulfurization of stable 1,2-bis(ferrocenyl)diphosphene

Abstract

Sulfurization reactions of a stable 1,2-bis(ferrocenyl)diphosphene, Fc P=PFc (Fc = 2,5-bis(3,5-dimethylphenyl)ferrocenyl), with elemental sulfur (S 8 ) were examined. At the first stage of the sulfurization reaction, the corresponding thiadiphosphirane derivative was obtained. It was found that further sulfurization afforded the corresponding 1,3,2,4-dithiadiphosphetane-2,4-disulfide derivative, dithioxophosphorane dimer. Structures of both heterocyclic compounds containing sulfur and phosphorus atoms were revealed by X-ray crystallographic analysis.

Deoxygenation of chalcogen oxides EO2 (E = S, Se) with phospha-Wittig reagents

“…All other metrics agree with known thia- and selenadiphosphiranes. 58–66 A notable side-reaction for the synthesis of 2:Mes* can be observed, when the stoichiometry is ca . 1 eq.…”

“…All other metrics agree with known thia-and selenadiphosphiranes. [58][59][60][61][62][63][64][65][66] A notable side-reaction for the syn-…”

“…In general, the oxi-dation of diphosphenes with elemental sulphur (or selenium) is the most established route to synthesize P 2 Ch (Ch = S, Se) rings (Scheme 3). [58][59][60][61][62][63][64][65][66] A handful of other routes have also been reported, [67][68][69][70][71] among them a combined dechlorinationelementation strategy using (Me 3 Sn) 2 E and (tBuPCl) 2 to access (tBuP) 2 E (E = S, Se) (Scheme 3, middle). 72 In here we show that Scheme 2 Phospha-Wittig reagents as phosphinidene precursors and their diverse reactivity toward selected nucleophiles.…”

Deoxygenation of chalcogen oxides EO2 (E = S, Se) with phosphaWittig reagents

“…In general, the oxidation of diphosphenes with elemental sulfur (or selenium) is the most established route to synthesize threemembered P2E (E = S, Se) rings (Scheme 4). [58][59][60][61][62][63][64][65][66] A handful of other routes have also been reported, [67][68][69][70][71] among them a combined dechlorination-elementation strategy using (Me3Sn)2E and (tBuPCl)2 to access (tBuP)2E (E = S, Se). 72 The protocols described in here are an alternative approach utilizing R−P(PMe3) for the deoxygenation of SO2 to yield thiadiphosphiranes.…”

“…All other bond parameters agree with known thia-and selenadiphosphiranes (Table 1). [58][59][60][61][62][63][64][65][66] A notable side-reaction for the synthesis of 2:Mes* can be observed, when the stoichiometry is ca. 1 eq of SeO2 and the solution is heated up while being sonicated.…”