An efficient gold-catalyzed formation of indenylidene-derived 1H-isochromene-4-carbaldehydes from substituted 1,5,10-triyne-O-silanes was developed under mild reaction conditions. In this reaction gold- catalyzed selective oxidation, 1,2-migration of enynyl group, nucleophilc addition and...

An efficient, one pot, high yielding method for the formation of (E/Z)-chloroallyl carbazoles has been developed. The strategy involves a gold-catalyzed cascade cyclization and hydroamination reaction sequence, leading to the formation of new C-C, C-N and C-Cl bonds.

An efficient synthetic method was developed to access isoquinoline-derived diene esters from enynones and isoquinoline-N-oxides in an atom-economic manner. The isoquinoline-substituted diene esters were obtained in moderate to excellent yields via [3 + 2]-cycloaddition and isoxazole ring opening followed by a [1,5]-sigmatropic rearrangement reaction, which resulted in one C–C and two C–O bond formations. Further, quinolin-2(1H)-ylidene-substituted 1,5-diones were achieved by reaction of enynones with quinoline-N-oxides in very good to high yields.