Boron−Boron Dehydrocoupling of Boranes Initiated by Reaction with Iodine

Elias, Jana; Kaifer, Elisabeth; Himmel, Hans‐Jörg

doi:10.1002/chem.201900671

Cited by 6 publications

(2 citation statements)

References 69 publications

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“…In contrast, the P1–B1 distance is longer than that of P2–B2, indicating that the latter bond is stronger due to the more basic character of P 2 in comparison to P 1 . The P1–C17–P2 angle is very large for a sp 3 -hybridized carbon, but this and the other metric parameters are similar to those of other methylene-bridged diphosphine–boranes …”

Section: Resultsmentioning

confidence: 99%

Palladium Complexes of Methylene-Bridged P-Stereogenic, Unsymmetrical Diphosphines

et al. 2020

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Optically pure P-stereogenic methylphosphine− boranes P(BH 3 )PhArMe (Ar = 1-naphthyl (1-Np), 9-phenanthryl (1-Phen), 2-biphenylyl (1-Biph)) have been used to prepare six diphosphines of the type PPhAr−CH 2 −PR 2 (R = Ph or i-Pr; 3-ArR) with a methylene bridge between the phosphorus atoms and a single P-stereogenic moiety. The ligands have been reacted with [PdCl 2 (COD)] to furnish the corresponding [PdCl 2 (P−P′)] complexes. The reaction with [PdCl(η 3 -2-methylallyl)] 2 and NH 4 PF 6 has produced the expected [Pd(η 3 -2-methylallyl)(P− P′)]PF 6 complexes as stable species in solution only for the ligands containing the diisopropylphosphino group. The other ligands produced a mixture of species in solution, from which the dimeric complex [Pd 2 (η 3 -2-methylallyl) 2 (PNpPh-CH 2 -PPh 2 ) 2 ](PF 6 ) 2 , and the coordination compound [Pd(PBiphPh-CH 2 -PPh 2 ) 2 ](PF 6 ) 2 could be crystallographically characterized.

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Section: Resultsmentioning

confidence: 99%

Palladium Complexes of Methylene-Bridged P-Stereogenic, Unsymmetrical Diphosphines

et al. 2020

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“…Himmel and co‐workers reported a class of diboron compounds 66 with bridging amidanate/guanidinate groups (Scheme 18). [60] Interestingly, the formation of the B−B bond was initiated by the addition of the oxidation reagent iodine, other than traditional reducing agents. DFT computations suggested that the boron‐boron dehydrocouping with iodine is thermodynamically favored.…”

Section: Neutral B−b Bonded Diboron Compoundsmentioning

confidence: 99%

Neutral and Anionic Diboron Compounds Bearing Electron‐Precise B−B Bond

Li,

Xu,

et al. 2023

The Chemical Record

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Electron‐precise B−B bonded compounds are valuable reagents in organic syntheses, which can be used as key starting material for the synthesis of functionalized organoboranes. Bis(pinacolato)diborane(4) B2pin2 and its derivatives are among the most studied diboron species. However, their B−B bonds usually need to be activated by transition metal catalysts or bases for further transformations. Recently, many well‐designed/reactive electron‐precise B−B bonded compounds have been developed, which could facilitate direct reactions with small molecules, unsaturated substrates, and electrophiles. This review highlights the synthesis, structure, and reactivity of neutral and anionic B−B bonded compounds.

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Trans‐selektive Dihydroborierung eines cis‐Diborens durch Insertion: Synthese eines linearen sp³‐sp²‐sp³‐Triborans und anschließende Kationisierung

et al. 2019

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Die Reaktion zwischen Aryl‐ und Amino(dihydro)boranen und Dibora[2]ferrocenophan 1 führt zur Bildung von 1,3‐trans‐Dihydrotriboranen durch formale Hydrierung und Insertion eines Borylens in die B=B Doppelbindung. Die Aryltriboran‐Derivate unterliegen einer reversiblen Photoisomerisierung zugunsten eines cis‐1,2‐μ‐H‐3‐Hydrotriborans, während eine Hydridabstraktion zu kationischen Triboranen führt, welche die ersten doppelt basenstabilisierten B3H4+‐Analoga darstellen.

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Boron−Boron Dehydrocoupling of Boranes Initiated by Reaction with Iodine

Cited by 6 publications

References 69 publications

Palladium Complexes of Methylene-Bridged P-Stereogenic, Unsymmetrical Diphosphines

Palladium Complexes of Methylene-Bridged P-Stereogenic, Unsymmetrical Diphosphines

Neutral and Anionic Diboron Compounds Bearing Electron‐Precise B−B Bond

Trans‐selektive Dihydroborierung eines cis‐Diborens durch Insertion: Synthese eines linearen sp³‐sp²‐sp³‐Triborans und anschließende Kationisierung

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Boron−Boron Dehydrocoupling of Boranes Initiated by Reaction with Iodine

Cited by 6 publications

References 69 publications

Palladium Complexes of Methylene-Bridged P-Stereogenic, Unsymmetrical Diphosphines

Palladium Complexes of Methylene-Bridged P-Stereogenic, Unsymmetrical Diphosphines

Neutral and Anionic Diboron Compounds Bearing Electron‐Precise B−B Bond

Trans‐selektive Dihydroborierung eines cis‐Diborens durch Insertion: Synthese eines linearen sp3‐sp2‐sp3‐Triborans und anschließende Kationisierung

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Trans‐selektive Dihydroborierung eines cis‐Diborens durch Insertion: Synthese eines linearen sp³‐sp²‐sp³‐Triborans und anschließende Kationisierung