Boroles

Nguyen, Minh Tho; Trang, Nguyen van; Dung, Tran Ngoc; Nguyen, Hue Minh Thi

doi:10.1016/b978-0-12-409547-2.14913-3

Cited by 5 publications

(8 citation statements)

References 235 publications

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“…As the donor ability of the phosphine in Ph2PBpin is diminished, we hypothesized that reactions with strong Lewis acids may furnish stable adducts of type B. Boroles and borafluorenes both contain a central unsaturated BC4 ring that is rendered highly Lewis acidic due to the antiaromatic state. [39][40][41][42] To understand the coordination chemistry of phosphinoboranes and provide insight into possible reaction mechanisms, we herein report the reactions of Ph2PBpin with pentaphenylborole and 9-Ph-9-borafluorene.…”

Section: Synlettmentioning

confidence: 99%

“…Boroles and 9-borafluorenes both contain a central unsaturated BC 4 ring that is rendered highly Lewis acidic due to its antiaromatic state. [39][40][41][42] To understand the coordination chemistry of phosphinoboranes and to provide insight into possible reaction mechanisms, we report the reactions of Ph 2 PBpin with pentaphenyl-1H-borole and 9-phenyl-9-borafluorene.…”

Section: Cluster Synlettmentioning

confidence: 99%

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Addition of a Phosphinoboronate Ester to Borole and Borafluorene

Martin,

Akram,

Vogels

et al. 2023

Synlett

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Section: Synlettmentioning

confidence: 99%

Section: Cluster Synlettmentioning

confidence: 99%

Addition of a Phosphinoboronate Ester to Borole and Borafluorene

Martin,

Akram,

Vogels

et al. 2023

Synlett

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“…Modern roundabouts have been proven to be a type of intersection with many advantages over traffic circle or rotary intersections in terms of minimizing congestion and traffic accidents. This type of intersection was developed in the 1960s in England, and then applied in many other developed countries around the world including the United States, Germany, France, Russia, Japan, and Australia [1][2][3][4][5]. Over time, modern roundabouts have evolved with a wide range of variations to suit different traffic needs and layouts.…”

Section: Introductionmentioning

confidence: 99%

A study on the capacity assessment of turbo roundabouts and the applicability in Vietnam

Nguyen Van,

Dang Minh

2024

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A turbo roundabout (or Turbine) is an improvement from conventional roundabouts with lanes running in a spiral shape, helping vehicles to enter the intersection smoothly and eliminate conflicts, reducing traffic congestion as well as the risk of traffic accidents. The turbo roundabout is a modern intersection, newly developed around 1996, initially in the Netherlands, then expanded to many European countries, Russia, and North America. In Vietnam, this type of intersection is still a novelty and requires more scientific exploration. Based on research from developed countries and through the use of Vissim traffic simulation software, the paper presents an analysis and evaluation of the effectiveness of Turbo roundabouts compared to conventional roundabouts. The study also proposed and developed shifted exponential models, capable of well describing the nonlinear relationship between capacity of entry roadway with circular flow. Results show that the turbo roundabout is a potential solution for Vietnamese traffic. The study's evaluation using a basic layout of a two-lane turbo roundabout with only automobile traffic composition limits its applicability to mixed traffic environments. Initially, the study proposes the installation of turbo roundabouts on access roads of freeways, or motor highways with low-to-medium traffic volume

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“…Marder, Braunschweig, and co-workers reported the mono- and bis-borafluorene ortho -carboranyl species 5 and 6 , that are both susceptible to endocyclic B–C bond cleavage or insertion to access heterocycles, which are, in many cases, similar to 9-borafluorenes with B-aryl or B-halo substitutions. ,,− Carboranes are considered to be 3D analogues of benzene, so accordingly, carborane that contains analogues of fluorene and anthracene have been targeted. The Ye and Dobrovetsky groups, along with our group, have reported bis- ortho -carboranyl-borane analogues of a 9-borafluorene with various substitutions on boron ( 7 ).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Carborane Substituents on the Lewis Acidity of Boranes

2023

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The Lewis acidity of primary, secondary, and tertiary boranes with phenyl, pentafluorophenyl, and all three isomers of the C-substituted icosahedral carboranes (ortho, meta, and para) was investigated by computing their fluoride, hydride, and ammonia affinities as well as their global electrophilicity indices and LUMO energies. From these calculations, it was determined that the substituent effects on the Lewis acidity of these boranes follow the trend of ortho-carborane > meta-carborane > para-carborane > C6F5 > C6H5.

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Boroles

Cited by 5 publications

References 235 publications

Addition of a Phosphinoboronate Ester to Borole and Borafluorene

Addition of a Phosphinoboronate Ester to Borole and Borafluorene

A study on the capacity assessment of turbo roundabouts and the applicability in Vietnam

The Effect of Carborane Substituents on the Lewis Acidity of Boranes

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