Reactivity and regioselectivity in 1, 3-dipolar cycloadditions of azides to strained alkynes and alkenes: a computational study

F Schoenebeck, DH Ess, GO Jones… - Journal of the American …, 2009 - ACS Publications
The transition states and activation barriers of the 1, 3-dipolar cycloadditions of azides with
cycloalkynes and cycloalkenes were explored using B3LYP density functional theory (DFT) …

Isomer-specific product detection of gas-phase xylyl radical rearrangement and decomposition using VUV synchrotron photoionization

P Hemberger, AJ Trevitt, T Gerber, E Ross… - The Journal of …, 2014 - ACS Publications
Xylyl radicals are intermediates in combustion processes since their parent molecules,
xylenes, are present as fuel additives. In this study we report on the photoelectron spectra of …

Reactions of 1, 2-Azaborinine, a BN-Benzyne, with Organic π Systems

D Gupta, HF Bettinger - The Journal of Organic Chemistry, 2023 - ACS Publications
Ortho-benzyne and 1, 2-azaborinine are related by the formal exchange of the CC triple
bond by the isoelectronic BN unit. The (2+ 2) and (2+ 4) cycloaddition reactions of 1, 2 …

Mechanism and the Origins of Periselectivity in Cycloaddition Reactions of Benzyne with Dienes

Y Hashimoto, DJ Tantillo - The Journal of Organic Chemistry, 2022 - ACS Publications
Density functional theory calculations have been used to explore the reaction mechanism of
(4+ 2) and (2+ 2) cycloadditions of benzyne with classical dienes. The results indicate the …

(2 + 2) Cycloaddition of Benzyne to Endohedral Metallofullerenes M3N@C80 (M = Sc, Y): A Rotating-Intermediate Mechanism

T Yang, S Nagase, T Akasaka, JM Poblet… - Journal of the …, 2015 - ACS Publications
The reaction mechanism and origin of regioselectivity of (2+ 2) cycloadditions of benzyne to
endohedral metallofullerenes M3N@ C80 (M= Sc, Y) were investigated with density …

Significance of Nonstatistical Dynamics in Organic Reaction Mechanisms: Time-Dependent Stereoselectivity in Cyclopentyne− Alkene Cycloadditions

DR Glowacki, SP Marsden… - Journal of the American …, 2009 - ACS Publications
The stereochemistry of the reaction between cyclopentyne and ethene has been modeled
using statistical methods, based on RRKM theory and a master equation analysis, and by …

Synthesis of P-stereogenic diarylphosphinic amides by directed lithiation: transformation into tertiary phosphine oxides via methanolysis, aryne chemistry and …

MA del Águila-Sánchez, Y Navarro, JG López… - Dalton …, 2016 - pubs.rsc.org
The highly diastereoselective synthesis of P-stereogenic phosphinic amides via directed
ortho lithiation (DoLi) of (SC)-P, P-diphenylphosphinic amides with t-BuLi followed by …

Unveiling the high reactivity of cyclohexynes in [3+ 2] cycloaddition reactions through the molecular electron density theory

LR Domingo, M Ríos-Gutiérrez, P Pérez - Organic & Biomolecular …, 2019 - pubs.rsc.org
[3+ 2] cycloaddition (32CA) reactions of cyclohexyne, a cyclic strained acetylene, with methyl
azide and methoxycarbonyl diazomethane have been studied within the Molecular Electron …

Is the mechanism of the [2+ 2] cycloaddition of cyclopentyne to ethylene concerted or biradical? A completely renormalized coupled cluster study

A Kınal, P Piecuch - The Journal of Physical Chemistry A, 2006 - ACS Publications
The mechanism of the [2+ 2] cycloaddition reaction of cyclopentyne to ethylene has been
studied using the completely renormalized coupled cluster method with singles, doubles …

Structural and rate studies of the formation of substituted benzynes

JC Riggs, A Ramirez, ME Cremeens… - Journal of the …, 2008 - ACS Publications
The key elimination step for the formation of 3-substituted and 3, 6-disubstituted benzynes
from 2-haloaryllithiums displays a pronounced solvent-dependent regioselectivity. All 2 …