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An efficient synthesis ofN-(5-alkyl-1,3-oxathiolan-2-ylidene)arylaminesviaa one-pot reaction between arylisothiocyanates and substituted oxiranes in the presence of catalytic amount of pyridine-2-carbaldehyde oxime is described. [ABSTRACT FROM PUBLISHER]

Copper or silver salts promote a domino addition-cyclization reaction between terminal alkynes, carbon disulfide, and oxiranes in a regioselective manner to afford 1,4-oxathiane derivatives in good yield. [ABSTRACT FROM AUTHOR]

• Domino ring opening/cross-coupling reaction of oxiranes. • Regioselective ring opening/cross-coupling reaction of oxiranes. • Chemoselective reaction of copper-acetylide with oxirane. • Catalytic synthesis of homo-propargylic ethers. • PEG-400 as environmental being solvent and ligand. A domino ring opening/cross-coupling reaction of oxiranes with terminal alkynes and aryl iodides has been developed. This transformation serves as a protocol for the synthesis of homo-alkyne ether skeletons from the readily available starting materials. The success of the reaction has dependence on catalyst/ligand system of choice. The synthesis utility of the alkyne ether skeletons in formation of chromane skeleton has also been studied. [ABSTRACT FROM AUTHOR]