According to the CRC dictionary of natural products, 1 90% of chemically individual
molecules discovered in nature contain either a carbocyclic or a heterocyclic subunit. 2 Not …

This work reexamined the stereoelectronic basis for the “favored attack trajectories”
regarding the nucleophilic and radical cyclizations of alkynes. In contrast to the original …

The transition states (TSs) of 5-endo-dig and 5-endo-trig anionic ring closures are the first
unambiguous examples of nonpericyclic reactions with TSs stabilized by aromaticity. Their …

Despite being predicted to be stereoelectronically favorable by the Baldwin rules, efficient
formation of a C− C bond through a 5-endo-dig radical cyclization remained unknown for …

FT-IR and FT-Raman spectra of 2-(benzylsulfanyl)-3, 5-dinitrobenzoic acid were recorded
and analyzed. SERS spectra were recorded in silver colloid, silver electrode and silver …

A variety of fragmentations and rearrangements can follow Bergman cyclization in
enediynes equipped with acetal rings mimicking the carbohydrate moiety of natural …

Independent of the nature of alkyne substitution, hydrazides of 4‐arylethynyl‐5‐carboxylic
acid annealed at the pyrazole scaffold undergo a regioselective base‐catalyzed 6‐endo‐dig …

Intramolecular cyclization of an amidyl radical onto an olefin provides an appealing method
for the synthesis of lactams and other nitrogen-containing heterocycles. Here we conducted …

The rearrangement of a substituted cyclohexyl radical to a cyclopentylmethyl radical on the
skeleton of avermectin B1 has been investigated using density functional (UB3LYP/6-31G …

This study deals with the synthesis of tert-O-alkyl thiohydroxamates and their use as tert-
alkoxyl radical precursors. tert-Alkoxyl radicals were applied in mechanistic studies to …