2-THIENYL(CYANO)COPPER LITHIUM. A LOWER ORDER, STABLE "CUPRATE IN A BOTTLE" PRECURSOR TO HIGHER ORDER REAGENTS

Article abstract of DOI:10.1016/S0040-4039(00)95881-7

The lower order mixed cuprate derived from CuCN and 2-lithiothiophene (i.e.,2-ThCu(CN)Li) is found to have excellent shelf life, thereby providing an easily formed yet itself unreactive precursor to higher order mixed organocuprates.