A strategy for the synthesis of spiroketal compounds through a tandem iodocyclization of 1-
(2-ethynylphenyl)-4-hydroxybut-2-yn-1-one derivatives is presented. This reaction could …

Nickel-mediated stereocontrolled synthesis of spiroketals via tandem cyclization–coupling
of β-bromo ketals and aryl iodides - Chemical Communications (RSC Publishing) DOI:10.1039/C3CC47780K …

The novel indium-catalyzed synthesis of benzannulated spiroketals by a double
intramolecular hydroalkoxylation reaction of o-(hydroxyalkynyl) benzyl alcohols is reported …

An efficient approach for the synthesis of highly functionalized pyrroles has been developed
by a Pd (TFA) 2-catalyzed tandem heterocyclization of 1-(1-alkynyl) cyclopropyl oxime …

Vinylogous esters bearing para or metamethoxy benzyl groups undergo oxidative
cyclisation with 5–20 mol% iodobenzene and m-CPBA to give spirofuran or benzopyran …

Tetrahedron Letters,Vol.29,No.24,pp 2947-2950,1988 $3.00 + -00 Printed in Great Britain
Pergamon Press plc P. PALE, J. CHUCHE La Page 1 Tetrahedron Letters,Vol.29,No.24,pp …

The Wittig reaction of isatin derivatives with Morita–Baylis–Hillman bromides of
cinnamaldehydes afforded 3‐dienylidene‐2‐oxindoles. These trienes were converted into …

A facile synthetic protocol for the preparation of spiro diheterocycles from easily available
2′-aminoacetophenones, isocyanates and 1, 4-benzoquinones or quinone monoimines …

A palladium‐catalyzed domino spiro‐cyclization of carbamoyl chlorides with alkynes and
benzynes, involving intramolecular C− H activation to afford valuable oxindole scaffolds …

A stereoselective (3+ 2) annulation process between 4-bromo pyrazolones and benzofuran-
derived azadienes was developed. A series of novel pyrazole fused spiroketals were …