Synthesis of dimethyleneketene acetals and their [2 + 2] cycloaddition to olefins and [60]fullerene as cyclopropanecarboxylate synthons

Article abstract of DOI:10.1055/s-1996-4392

The synthesis and synthetic utilization of the dimethyleneketene acetal 3 are described in this report. Thermal rearrangement of the methylenecyclopropanone acetal 1 at 150°C gives the dimethyleneketene acetal 3, which serves as a reactive surrogate of th