Seok-Keun Yoon

PALLADIUM-CATALYZED CARBONYLATIVE CROSS-COUPLING OF ORGANOBORANES WITH HYPERVALENT IODONIUM SALTS : SYNTHESIS OF AROMATIC KETONES

Abstract The cross-coupling reaction of organoboronic acids and carbon monoxide (1 atm) with aryl-, alkenyl-, and alkynyliodonium salts at room temperature afforded unsymmetric aromatic ketones in moderate yields.

Palladium-catalyzed coupling and carbonylative coupling of silyloxy compounds with hypervalent iodonium salts

Abstract Arylation and alkenylation of 1-ethoxy-1-trimetylsilyloxycyclopropane with diphenyliodonium tetrafluoroborate and alkenyliodonium tetrafluoroborate were accomplished by slow addition of silyloxycyclopropane to iodonium salts in the presence of Pd(OAc)2 (2 mol %) and DME H 2 O (4:1) to afford β-substituted ester. Alternatively, carbonylative coupling of silyloxypropane was carried out by slow addition of silyloxypropanes to iodonium salts under CO(1 atm) at room temperature in aqueous medium. The palladium-catalyzed coupling of ketene trimethylsilyl acetals with iodonium salts is also described.

cis-Stereoselective nickel-catalyzed cyclization/alkylation and arylation reactions of allenyl-aldehydes and -ketones with organozinc reagentsElectronic supplementary information (ESI) available: typical procedures, NMR-data, and X-ray data. See http://www.rsc.org/suppdata/cc/b2/b207620a/

Highly stereoselective alkylative and arylative cyclization reactions of allenyl-aldehydes and -ketones with organozinc reagents occur efficiently in the presence of catalytic Ni(COD)2 to afford cis-fused homoallylic cyclopentanols.

Copper-catalyzed coupling of polymer bound iodide with organostannanes

Abstract The copper iodide-catalyzed cross-coupling of polymer bound aryl iodide with organostannanes in N-methyl-2-pyrrolidone (NMP) was accomplished smoothly in the presence of NaCl.

PALLADIUM-CATALYZED CARBON- CARBON BOND FORMATION ON A SOLID PHASE UTILIZING HYPERVALENT IODONIUM SALTS

Abstract Palladium-catalyzed cross-coupling of hypervalent iodonium salts with polymer bound alkene, alkyne, and boronate was achieved under mild conditions.

Highly diastereoselective Prins-type cyclisation of cyclopropylvinylic aldehydes mediated by TiCl4Electronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b4/b406362g/

A novel intramolecular Prins type cyclisation of cyclopropylvinylic aldehydes promoted by TiCl(4) under mild reaction conditions to form cis-cyclic products in high yields has been accomplished.

Palladium-catalyzed coupling reaction of acylzirconocene chlorides with hypervalent iodonium salts: synthesis of aryl-substituted ketones

The palladium-catalyzed acylation reaction of alkenoyl- and alkanoylzirconocene chlorides with hypervalent iodonium salts afforded the acylated aromatic compounds under mild conditions.