Formal [4+ 1] annulation reactions in the synthesis of carbocyclic and heterocyclic systems

JR Chen, XQ Hu, LQ Lu, WJ **ao - Chemical reviews, 2015 - ACS Publications
The development of new strategies and chemical reactions continues to be a major focus of
research efforts in the modern synthetic organic community. 1 Of the various types of …

Quinone‐catalyzed selective oxidation of organic molecules

AE Wendlandt, SS Stahl - Angewandte Chemie International …, 2015 - Wiley Online Library
Quinones are common stoichiometric reagents in organic chemistry. Para‐quinones with
high reduction potentials, such as DDQ and chloranil, are widely used and typically promote …

Nickel-Catalyzed Reductive [4+ 1] Sila-Cycloaddition of 1, 3-Dienes with Dichlorosilanes

L Qi, QQ Pan, XX Wei, X Pang, Z Liu… - Journal of the American …, 2023 - ACS Publications
Transition-metal-catalyzed sila-cycloaddition has been a promising tool for accessing
silacarbocycle derivatives, but the approach has been limited to a selection of well-defined …

Activation of the Si–B interelement bond: mechanism, catalysis, and synthesis

M Oestreich, E Hartmann, M Mewald - Chemical Reviews, 2013 - ACS Publications
Interelement compounds, that is, compounds containing an interelement bond, 1 are
attractive main group element precursors as these provide the opportunity to transfer both …

Versatile tetrasilane for time-controlled palladium-catalyzed divergent synthesis of silacycles via C–H activation

Y Xu, M Sun, W Xu, G Deng, Y Liang… - Journal of the American …, 2023 - ACS Publications
Transition-metal-catalyzed intermolecular annulation of silicon reagents with organic
molecules is still underdeveloped due to the scarcity of silicon reagent types and their …

Recent advances in the C–H-functionalization of the distal positions in pyridines and quinolines

DE Stephens, OV Larionov - Tetrahedron, 2015 - Elsevier
C–H-functionalization has emerged as a powerful tool for the synthesis of heterocyclic
compounds. 1 However, with numerous C–H-bonds simultaneously available for activation …

2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ)/tert‐Butyl Nitrite/Oxygen: A Versatile Catalytic Oxidation System

Z Shen, J Dai, J **ong, X He, W Mo… - Advanced Synthesis …, 2011 - Wiley Online Library
A new catalytic oxidation system using catalytic amounts of 2, 3‐dichloro‐5, 6‐dicyano‐1, 4‐
benzoquinone (DDQ) and tert‐butyl nitrite with molecular oxygen serving as the …

Syntheses of strychnine, norfluorocurarine, dehydrodesacetylretuline, and valparicine enabled by intramolecular cycloadditions of Zincke aldehydes

DBC Martin, LQ Nguyen… - The Journal of Organic …, 2012 - ACS Publications
A full account of the development of the base-mediated intramolecular Diels–Alder
cycloadditions of tryptamine-derived Zincke aldehydes is described. This important …

Synthesis of silafluorenes and silaindenes via silyl radicals from arylhydrosilanes: intramolecular cyclization and intermolecular annulation with alkynes

L Xu, S Zhang, P Li - Organic Chemistry Frontiers, 2015 - pubs.rsc.org
Intramolecular homolytic aromatic silylation of biphenyl-2-hydrosilanes via silyl radicals has
been developed for the synthesis of silafluorenes. Moreover, silaindenes are synthesized …

Difluorination of α-(bromomethyl) styrenes via I (I)/I (III) catalysis: facile access to electrophilic linchpins for drug discovery

J Häfliger, K Livingstone, CG Daniliuc, R Gilmour - Chemical Science, 2021 - pubs.rsc.org
Simple α-(bromomethyl) styrenes can be processed to a variety of 1, 1-difluorinated
electrophilic building blocks via I (I)/I (III) catalysis. This inexpensive main group catalysis …