Sterically encumbered functional groups: an investigation of endo versus exo phosphoryl complexation using proton and phosphorus-31 NMR

Friedrichsen, Bernard P.; Powell, Douglas R.; Whitlock, H. W.

doi:10.1021/ja00180a044

Cited by 73 publications

(38 citation statements)

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“…Deprotection of the phosphane oxides 2aϪd was performed using boron tribromide in dichloromethane, [35] affording the corresponding hydroxyphosphane oxides 3aϪd in good yields after recrystallisation.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a Family of Triarylphosphanes with Fluorous Phase Affinity

2002

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Section: Resultsmentioning

confidence: 99%

Synthesis of a Family of Triarylphosphanes with Fluorous Phase Affinity

2002

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“…Reagent-grade PPh 3 (Aldrich), and (S,S)-DPEN (Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences), and RuCl 3 ·xH 2 O (Institute of Kunming Noble Metals, China) were used as received. Other materials MOTPP [21], TFTPP [22], BDPX [23], BISBI [24], RuCl 2 (BDPX)(PPh 3 ) and RuCl 2 (BISBI)(PPh 3 ) [25][26][27], RuCl 2 (MOTPP) 3 [28], RuCl 2 (TFTPP) 3 [28] were prepared according to the literature methods.…”

Section: Methodsmentioning

confidence: 99%

Asymmetric hydrogenations of ketones catalyzed by Ru–achiral phosphine-enantiopure diamine complexes

Xia

Tang

Liang

et al. 2005

Journal of Molecular Catalysis A: Chemical

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“…posite configurations of the P atoms in the two subunits ('in' and 'out' nomenclature) [27], which is an unprecedented phenomenon as far as we know [28][29]. If the dimer is considered as one tecton, each pair of phenyl rings interacts with two neighboring tectons by NO···, CH···O, and ··· weak interactions so that the tectons stack to form a column (Figure 7), and each tecton interacts with six neighboring tectons by NO··· and CH···O weak interactions.…”

Section: The Crystal Structure Of Compoundmentioning

confidence: 99%

Tripod molecules build molecular networks and open-dimer capsules by weak interactions

et al. 2010

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Three tripod molecules, tris(2-methoxy-5-nitrobenzyl)phosphine oxide (1), tris(2-butoxy-3-methyl-5-nitrobenzyl)phosphine oxide (2), and tris(3-nitrobenzyl)amine (TNBA), were synthesized and crystallized. The structures of 1, 2, and their comparison (TNBA) were determined by X-ray crystallography. It is noteworthy that compound 1 interacted with adjacent molecules via - stacking and CH··· interactions to yield an open supramolecular network with the porosity P in 8.9%, whereas compound 2 gathered closely to form an open-dimer capsule by sixfold NO··· and triple CH···O interactions, which showed a rare example of a stable in, out-invertomer of phosphine inversion existing in open-dimers. A series of columns were built and arranged side by side by these weak interactions. By contrast, TNBA crystallized to form a 2D network maintained by CH···O and CH··· interactions. It seems minor changes of the chemical structure may cause large differences in the crystal structure and interactions in crystal engineering. tripod molecule, supramolecular network, open-dimer capsule, weak interaction

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Sterically encumbered functional groups: an investigation of endo versus exo phosphoryl complexation using proton and phosphorus-31 NMR

Cited by 73 publications

References 0 publications

Synthesis of a Family of Triarylphosphanes with Fluorous Phase Affinity

Synthesis of a Family of Triarylphosphanes with Fluorous Phase Affinity

Asymmetric hydrogenations of ketones catalyzed by Ru–achiral phosphine-enantiopure diamine complexes

Tripod molecules build molecular networks and open-dimer capsules by weak interactions

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