Fréquence d'absorption de la liaison PN dans des composés du phosphore tricoordonne

Mathis, Raymonde; Lafaille, Louis; Burgada, R.

doi:10.1016/0584-8539(74)80075-9

Cited by 15 publications

(2 citation statements)

References 17 publications

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“…The N-C assignments are highly tentative since coupling with the CH3 deformation modes due to the enhancement of theinteraction with increasing substitution is likely.12,16 The 940-980-cm"1 region has been suggested for the P-N stretching in P(NMe2)2 compounds. 12 The rather high P-N frequencies observed here are also a tronegativity of the carborane cage favors this interaction. The shift of the P-N frequency to a higher energy in IV can be interpreted in terms of a further enhancement of theinteraction by the more electronegative fluorine atoms.…”

Section: Results and Discissionmentioning

confidence: 58%

Preparation and characterization of di(tertiary phosphines) with electronegative substituents. 1. Symmetrical derivatives

Hill¹,

SILVA-TRIVINO²

1978

Inorg. Chem.

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Section: Results and Discissionmentioning

confidence: 58%

Preparation and characterization of di(tertiary phosphines) with electronegative substituents. 1. Symmetrical derivatives

Hill¹,

SILVA-TRIVINO²

1978

Inorg. Chem.

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“…The bis-(dialkylamino) phosphine S.20 (Fig. 3.3.6) would, therefore, be more prone to protonation by a weak acid than would the deoxyribonucleoside phosphoramidite S.21, because it has been demonstrated that an alkoxy group contributes less to pπ-dπ interactions than does a dialkylamino group (Mathis et al, 1974). This concept was convincingly tested when the deoxyribonucleoside S.11 was reacted with bis-(pyrrolidino)methoxyphosphine S.20 and the weak acid 4,5-dichloroimidazole (Beaucage, 1984;Moore and Beaucage, 1985) to generate the deoxyribonucleoside phosphoramidite S.21 within 10 min, in yields exceeding 86% (Fig.…”

Section: Alternate Strategies To the Preparation Of Deoxyribonucleosi...mentioning

confidence: 99%

Synthetic Strategies and Parameters Involved in the Synthesis of Oligodeoxyribonucleotides According to the Phosphoramidite Method

Beaucage

Caruthers

2000

CP Nucleic Acid Chemistry

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The phosphoramidite approach has had a major impact on the synthesis of oligonucleotides. This unit describes parameters that affect the performance of this method for preparing oligodeoxyribonucleotides, as well as a number of compatible strategies. Milestones that led to the discovery of the approach are chronologically reported. Alternate strategies are also described to underscore the versatility by which these synthons can be obtained. Mechanisms of deoxyribonucleoside phosphoramidite activation, factors affecting condensation, and deprotection strategies are discussed.

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Aminophosphines: their chemistry and role as ligands and synthons

Gopalakrishnan

2009

Applied Organom Chemis

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In recent years, research in organophosphorus chemistry has mainly focused in designing newer and better phosphorus ligands for synthesizing novel metal complexes with improved catalytic activities. Aminophosphines [tricoordinate phosphorus(III)-nitrogen systems] are considered as versatile compounds owing to the presence of nitrogen centres which, in principle, can influence additional reactivity features. They are quite sensitive to air and moisture due to the presence of polar P-N bond(s). In spite of this, research in aminophosphine chemistry is gaining momentum day-by-day and this is due mainly to one reason: their rich behaviour as ligands in metal complex chemistry and subsequently in catalysis. Their role as synthons in inorganic heterocyclic chemistry has also helped produce new types of heterocycles. In this paper, the chemistry of simple acyclic aminophosphines (synthesis, characterization, reactivity and applications) is covered and particular focus is given to their ability to form chalcogenides along with their role played as ligands in coordination chemistry and as synthons in inorganic heterocyclic chemistry.

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Fréquence d'absorption de la liaison PN dans des composés du phosphore tricoordonne

Cited by 15 publications

References 17 publications

Preparation and characterization of di(tertiary phosphines) with electronegative substituents. 1. Symmetrical derivatives

Preparation and characterization of di(tertiary phosphines) with electronegative substituents. 1. Symmetrical derivatives

Synthetic Strategies and Parameters Involved in the Synthesis of Oligodeoxyribonucleotides According to the Phosphoramidite Method

Aminophosphines: their chemistry and role as ligands and synthons

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