6533b827fe1ef96bd1286ed3

RESEARCH PRODUCT

Preparation of dithiacycloalkynes by cyclization reactions applying the cesium effect

Herbert MeierYujia Dai

subject

chemistryStereochemistryCaesiumOrganic ChemistryDrug DiscoveryPolymer chemistrychemistry.chemical_elementReactivity (chemistry)BiochemistryCobaltCycloadditionAdduct

description

Abstract The strained dithiacycloalkynes 3a,b and the larger heterocyclic alkynes 3c and 4 are obtained by cesium assisted cyclization reactions of the dithiols 1a–c and 1,4-dibromo-2-butyne (2). The reactivity of 3a–c was studied in cycloaddition and complexation reactions generating the adducts 5a,b and 6 and the silver and cobalt complexes 7 and 8.

https://doi.org/10.1016/s0040-4039(00)73972-4