Phosphorus phosphorus compounds with the coordination number 4

Untersuchungen an phosphazenen der KZ 2 und 3

Durch radikalische Addition von Triathylstannan an Alkenylphosphon-und -phosphinsaureester werden ω-Triathylstannylalkylphosphon- und -phosphinsaureester 1 synthetisiert, die durch Umsetzung mit Brom bzw. Chlorwasserstoff unter Substitution eines Athylrestes die Organozinnhalogenide 2 und 3 liefern. Aus der alkalischen Hydrolyse der stannyl-substituierten Phosphinsaureester resultieren die Sauren 4, die in die cyclischen Organozinnphosphinate 5 uberfuhrbar sind. Lithiumalanat reduziert ω-Triathylstannylalkylphosphon- und -phosphinsaureester zu ω-Triathylstannylalkylphosphinen 6, deren P-phenylsubstituierte Vertreter durch Schwefel uber die Dithiosauren 8 zu 1-Diathyl-3-phenyl-1,2,3-stannathiaphospholan- bzw. -phosphorinan-P-sulfid 9 oxydiert werden.



Functionally Substituted Organotin Compounds. I ω-Triethylstannylalkylphosphonic- and -phosphinic Esters



ω-Triethylstannylalkylphosphonic- and -phosphinic esters 1 can be synthesized by radical addition of triethylstannane to alkenylphosphonic- and -phosphinic esters. Their reaction with bromine or hydrochloric acid causes a substitution of an ethyl group forming organotin halides 2 and 3. On alkaline hydrolysis of stannylsubstituted phosphinic esters, the acids 4 were obtained which can be transformed into the cyclic organotin phosphinates 5. Lithium aluminium hydride reduces ω-triethylstannylalkylphosphonic- and -phosphinic esters to ω-triethylstannyl-alkylphosphines 6. The P-phenylsubstituted compounds 6 are oxidized by sulfur via the dithioacids 8 to 1-diethyl-3-phenyl-1,2,3-stannathiaphospholane- and -phosphorinane-P-sulfid 9, respectively.

Funktionell substituierte zinnorganische Verbindungen. I. ω‐Triäthylstannylalkylphosphon‐ und ‐phosphinsäureester

2,4-Diethoxy-1,3-diphenyl-1,3,2,4-diazadiphosphetidine (1a) reacted with benzil, benzalacetophenone, and α-phenyliminobenzyl phenyl ketone in refluxing o-dichlorobenzene to give 2-ethoxy-3,4,5-triphenyl-Δ4-1,3,2-oxazaphospholine 2-oxide, 2-ethoxy-1,3,5-triphenyl-Δ4-1,2-azaphospholine 2-oxide, and 2-anilino-3,4,5-triphenyl-Δ4-1,3,2-oxazaphospholine 2-oxide, respectively. Under mild conditions, reaction of 1a with benzil gave a Ramirez type 1:2 adduct, which thermally decomposed to give oxazaphospholine derivatives.

Phosphorus phosphorus compounds with the coordination number 4

References

Untersuchungen an phosphazenen der KZ 2 und 3

Funktionell substituierte zinnorganische Verbindungen. I. ω‐Triäthylstannylalkylphosphon‐ und ‐phosphinsäureester

Reactions of 2,4-Dialkoxy-1,3-diphenyl-1,3,2,4-diazadiphosphetidines with Benzil, Benzalacetophenone, and α-Phenyliminobenzyl Phenyl Ketone

Complexes of trivalent phosphorus derivatives. XVII. Reactions of iron carbonyls with 1,2,3-triphenyl-1,2,3-triphosphaindane

Ein schwefeldiimido‐überbrücktes Cyclophosphazen

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