Di‐ tert‐butylthia‐ and ‐selenadiphosphirane

Abstract

rene"]. To improve the method-and particularly the stability and regeneratability of the reagent-we supported soluble organotin hydrides on solid inorganic carriers.Hydrostannation of trimethoxy(viny1)silane with dibutylstannane affords an isomeric mixture of dibutyl( 1-and 2-trimethoxysilylethyl)tin hydride, which reacts with aluminum oxide o r silica gel with cleavage of methanol:

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

“…58–66 A handful of other routes have also been reported, 67–71 among them a combined dechlorination–elementation strategy using (Me 3 Sn) 2 E and ( t BuPCl) 2 to access ( t BuP) 2 E (E = S, Se) (Scheme 3, middle). 72 In here we show that phospha-Wittig reagents reduce SO 2 (and SeO 2 ) under mild conditions to form a series of thia- and selenadiphosphiranes as the main products (Scheme 3, bottom).…”

“…[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

“…[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. In seemingly similar manner, the deoxygenation and thus reduction of SeO2 is accomplished at ambient temperature and selenadiphosphiranes are obtained (Scheme 3, bottom).…”