Reactions of allylmagnesium reagents with carbonyl compounds and compounds with C═ N double bonds: their diastereoselectivities generally cannot be analyzed …

ND Bartolo, JA Read, EM Valentín… - Chemical reviews, 2020 - ACS Publications
This review describes the additions of allylmagnesium reagents to carbonyl compounds and
to imines, focusing on the differences in reactivity between allylmagnesium halides and …

Regiochemistry in aryl radical cyclization onto methylenecycloalkanes

H Ishibashi, T Kobayashi, S Nakashima… - The Journal of Organic …, 2000 - ACS Publications
Bu3SnH-mediated aryl radical cyclization onto methylenecycloalkanes having a phenylthio,
an ester, or a nitrile group at the terminus of the alkenic bond provides exclusively exo …

Efficient Regio- and Stereoselective Formation of Azocan-2-ones via 8-Endo Cyclization of α-Carbamoyl Radicals

X Fang, K Liu, C Li - Journal of the American Chemical Society, 2010 - ACS Publications
The iodine-atom-transfer 8-endo cyclization of α-carbamoyl radicals was investigated
experimentally and theoretically. With the aid of Mg (ClO4) 2 and a bis (oxazoline) ligand, N …

Titanocene (III) mediated radical cyclizations of epoxides for the synthesis of medium-sized cyclic ethers

SK Mandal, SC Roy - Tetrahedron, 2007 - Elsevier
Titanocene (III) chloride (Cp2TiCl) mediated 7-exo and 8-endo radical cyclizations of
epoxides towards the synthesis of 7-and 8-membered cyclic ethers have been described …

Selective Synthesis of Cyclooctanoids by Radical Cyclization of Seven‐Membered Lactones: Neutron Diffraction Study of the Stereoselective Deuteration of a Chiral …

X Just‐Baringo, J Clark, MJ Gutmann… - Angewandte Chemie …, 2016 - Wiley Online Library
Seven‐membered lactones undergo selective SmI2–H2O‐promoted radical cyclization to
form substituted cyclooctanols. The products arise from an exo‐mode of cyclization rather …

First organophosphorus radical-mediated cyclisations to afford medium-sized rings: eight-membered lactones and seven-and eight-membered lactams

S Lang, M Corr, N Muir, TA Khan, F Schönebeck… - Tetrahedron letters, 2005 - Elsevier
The phosphorus based radical precursors N-ethylpiperidine hypophosphite (EPHP) and
diethylphosphine oxide (DEPO) are efficient reagents for carrying out the formation of seven …

Construction of bridged polycyclic systems via radical cyclizations. uncovering of a novel carbocyclization− ring expansion sequence

J Ramón Rodríguez, L Castedo, JL Mascareñas - Organic Letters, 2001 - ACS Publications
While exploring the application of radical cyclizations to the construction of bridged
polycyclic systems, we have discovered a novel tandem process consisting of an endo …

[PDF][PDF] Titanocene (III) mediated 8-endo radical cyclizations for the synthesis of eight-membered cyclic ethers

SK Mandal, SC Roy - Tetrahedron letters, 2006 - academia.edu
Titanocene (III) chloride (Cp2TiCl) mediated 8-endo radical cyclizations towards the
synthesis of eight-membered cyclic ethers have been described. Titanocene (III) chloride …

Conformationally Biased Ketones React Diastereoselectively with Allylmagnesium Halides

ND Bartolo, KM Demkiw, JA Read… - The Journal of …, 2022 - ACS Publications
The addition of the highly reactive reagent allylmagnesium halide to α-substituted acyclic
chiral ketones proceeded with high stereoselectivity. The stereoselectivity cannot be …

Wittig olefination and thiol mediated 7-endo-trig radical cyclization: novel synthesis of oxepin derivatives

KC Majumdar, A Taher - Tetrahedron Letters, 2009 - Elsevier
Thiophenol-mediated 7-endo radical cyclization for the synthesis of seven-membered cyclic
ethers is described. This method can be successfully applied to synthesize various …