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Sequential free radical synthesis of a linear triquinane skeleton from an acyclic synthon
(Tetrahedron Letters, 1994)
Regio- and stereoselective synthesis of a linear triquinane derivative was accomplished by a sequential free radical reaction, starting from an acyclic precursor. © 1994.
Radical annulation methodology. 2-Vinylcyclopentane derivative formation by a 3 + 2 cycloaddition reaction
(Tetrahedron Letters, 1990)
By thermally or photolytically induced decomposition of O-acyl derivatives of N-hydroxypyridine-2-thione or other thiohydroxamic esters, in the presence of an excess of electron deficient olefins, 2-vinylcyclopentane ...
A convenient synthesis of trifluoromethyl aryl sulfides
(Pergamon-Elsevier Science Ltd, Oxford, 1996)
Trifluoromethyl aryl sulfides are obtained in moderate/good yields by heating potassium trifluoroacetate and aryl disulfides in sulfolane. Copyright (C) 1996 Elsevier Science Ltd
Radical cyclization reactions. Cyclopropane ring formation by 3-exo-cyclization of 5-phenylthio-3-pentenyl radicals
(Tetrahedron Letters, 1990)
Free radical cyclopropane ring closure was accomplished by thermal decomposition of thiohydroxamic esters of 6-phenylthio-4-hexencic acids. When the reaction was performed in the presence of acrylonitrile; an addition/cy ...
A novel m-CPBA oxidation: p-quinols and epoxyquinols from phenols
(Pergamon-Elsevier Science Ltd, Oxford, 1996)
Steroidal quinols were obtained on large scale in 50-57% yield, together with syn-epoxyquinols. The reaction conditions can be adjusted to afford only the corresponding steroidal epoxyquinol in 51-54% yield. Copyright (C) ...
Synthesis of bridged cyclooctane derivatives via alkoxy radical fragmentation
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
beta-Fragmentation of an alkoxy radical generated from ketol 4 under the conditions of hypohalite reaction afforded functionalized bridged cyclooctane derivatives 5 and 7 in excellent yields. Copyright (C) 1996 Published ...
A new synthesis of alpha-tetralones.
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
alpha-tetralones 8a-j can be prepared by radical cyclisation, in the presence of stoichiometric amounts of lauroyl peroxide, of xanthates 5a-j obtained by an intermolecular addition of substituted S-phenacyl xanthates 4a-c ...
Free radical phenylthio group transfer to nonactivated delta-carbon atom in the photolysis reactions of alkyl benzenesulfenates
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
A free radical phenylthio group transfer from oxygen to the non-activated delta-carbon atom was achieved by irradiation of alkyl benzenesulfenates 1 in the presence of hexabutylditin, and delta-phenylthio alcohols 2 were ...
Free radical mediated construction of small ring compounds: The double annulation of bicyclo[3.1.0]hex-2-enes
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
A free radical approach to fused cyclopropane derivatives is described. Homolytic decomposition of thiohydroxamic esters 4a-e in the presence of dimethyl acetylendicarboxylate affords bicyclo[3.1.0]hex-2-enes 6a-e in ...