1995
DOI: 10.1002/zaac.19956210632
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Organophosphorverbindungen mit tertiären Alkylsubstituenten. V. Synthese und Reaktionen triphenylmethyl‐substituierter Dihalogenphosphine TrtPX2 (Trt = Triphenylmethyl‐, X = F, Cl, Br); Kristallstrukturen von Triphenylmethyldichlorphosphin TrtPCl2 und Triphenylmethylthiophosphonsäuredifluorid TrtP(:S)F2

Abstract: Die Dihalogenphosphine TrtPX2 (Trt = Ph3C; X = Cl: 2, Br: 3) sind durch Umsetzung von TrtP(:O)(H)OH 1 mit PCl3 bzw. PBr3 zugänglich. 2 ist auch durch Grignardierung von PCl3 mit TrtMgCl, 3 aus 2/Me3SiBr darstellbar. TrtPF2 4 wurde durch Umsetzung von 2 mit NaF oder aus TrtLi und PF2Cl erhalten. Aus 2 und LiAlH4 oder HSiCl3/NaOH(aq) war das primäre Phosphin TrtPH2 6 zugänglich, die gleichzeitige Einwirkung von NaF und H2O auf 2 führte zu TrtP(:O)(H)F 9. Im System 2/(NOR)Mo(CO)4 (NOR = Norbornadien) wurde als Pr… Show more

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Cited by 25 publications
(16 citation statements)
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“…(4)). As expected, the corresponding tert.-butyl-substituted phosphorane 7 [25] was identified as the only phosphorus-containing species by 31 P NMR spectroscopy. No trace of its Trt-substituted analogue was observed [25].…”
Section: Methodsmentioning
confidence: 70%
See 1 more Smart Citation
“…(4)). As expected, the corresponding tert.-butyl-substituted phosphorane 7 [25] was identified as the only phosphorus-containing species by 31 P NMR spectroscopy. No trace of its Trt-substituted analogue was observed [25].…”
Section: Methodsmentioning
confidence: 70%
“…As expected, the corresponding tert.-butyl-substituted phosphorane 7 [25] was identified as the only phosphorus-containing species by 31 P NMR spectroscopy. No trace of its Trt-substituted analogue was observed [25]. (4) In contrast to the behaviour of 1±3 towards I 2 , PCl 3 , AlCl 3 , and TOB, the reaction of 1 and 2 with LiAlH 4 can only partially be explained by an equilibrium between TrtRPF 3 and TrtF/RPF 2 .…”
Section: Methodsmentioning
confidence: 70%
“…Treatment of 3 with Me 3 SiBr or HBr always furnished TrtP(H)Br (7) only as a mixture with varying amounts of TrtH, formed by cleavage of the P±C bond in 3. Cleavage of a P±C bond by the mild reagent Me 3 SiBr is somewhat surprising, but proves the known sensitivity of the P±C bond in Trt-phosphorus compounds towards many nucleophiles [15,27]. Accordingly, the reaction of NaI with 3 led, through cleavage of the P±C bond and substitution of hydrogen for iodine, to PI 3 and P 2 I 4 as the the only phosphorus compounds observed.…”
Section: Methodsmentioning
confidence: 79%
“…If 3 was treated with excess phosgene only incomplete conversion to 5 took place while no trace of the dichlorophosphine TrtPCl 2 [15] was observed (Scheme 2). Apparently, the elimination of CO from 5 requires a certain electron density at the phosphorus atom, a situation which does not obtain for 5 due to the -I-effect of all three substituents bonded to phosphorus.…”
Section: B) Reactions Of Trtp(h)cl (3)mentioning
confidence: 95%
“…Proton decoupling of heteroatom NMR spectra was used, except when indicated otherwise. The following compounds were synthesized according to literature procedures: TrtP(H)F [14], TrtP(H)Cl [14], and TrtPCl 2 [15].…”
Section: Methodsmentioning
confidence: 99%