2H-thiopyrans as intermediates in the rearrangement of thiophenium bisalkoycarbonylmethylides to thiophene-2-malonates; the crystal and molecular structure of 2,2-bis-t-butoxycarbonyl-5-bromo-2H-thiopyran and 2,2-bis-t-butoxycarbonyl-6-bromo-2H-thiopyran
Abstract
2H-Thiopyrans have been observed as intermediates in the rearrangement of thiophenium bisalkoxy-carbonylmethylides to thiophene-2-malonates.