An Iron-Catalyzed Route to Dewar 1,3,5-Triphosphabenzene and Subsequent Reactivity.
An Iron-Catalyzed Route to Dewar 1,3,5-Triphosphabenzene and Subsequent Reactivity.
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DOI:
10.1002/anie.202208663
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发表时间:
2022-09-12
期刊:
影响因子:
--
通讯作者:
Webster RL
中科院分区:
文献类型:
--
作者:
Barrett AN;Diefenbach M;Mahon MF;Krewald V;Webster RL
The application of an alkyne cyclotrimerization regime with an [Fe(salen)]2‐μ‐oxo (1) catalyst to triphenylmethylphosphaalkyne (2) yields gram‐scale quantities of 2,4,6‐tris(triphenylmethyl)‐Dewar‐1,3,5‐triphosphabenzene (3). Bulky lithium salt LiHMDS facilitates a rearrangement of 3 to the 1,3,5‐triphosphabenzene valence isomer (3′), which subsequently undergoes an intriguing phosphorus migration reaction to form the ring‐contracted species (3′′). Density functional theory calculations provide a plausible mechanism for this rearrangement. Given the stability of 3, a diverse array of unprecedented transformations was investigated. We report novel crystallographically characterized products of successful nucleophilic/electrophilic addition and protonation/oxidation reactions. A mild, scalable iron‐catalyzed route to a Dewar phosphabenzene is presented. This species isomerizes in the presence of base to form the 1,3,5‐phosphabenzene, which then spontaneously rearranges to a novel triphospha(tricyclo) species. Onward coordination chemistry of all three phosphines is explored along with an extensive study into the reactivity of the Dewar phosphabenzene.
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影响因子:
2.3
作者:
Binger, P;Leininger, S;Kruger, C
通讯作者:
Kruger, C
DOI:
10.1002/anie.199501981
发表时间:
1995-02-03
期刊:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH
影响因子:
--
作者:
BOHM, D;KNOCH, F;ZENNECK, U
通讯作者:
ZENNECK, U
DOI:
10.1039/b108020m
发表时间:
2002-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
影响因子:
--
作者:
Clendenning, SB;Gehrhus, B;West, R
通讯作者:
West, R
影响因子:
4.3
作者:
Clendenning, Scott B.;Hitchcock, Peter B.;Nyulaszi, Laszlo
通讯作者:
Nyulaszi, Laszlo
影响因子:
2.8
作者:
Cloke, FGN;Hitchcock, PB;Wilson, DJ
通讯作者:
Wilson, DJ