Synthesis of a novel series of 7-hydroxy-10-aryl-10H-indeno[1,2-b]chromen-11-ones, indeno[1,2-b]naphtho[1,2-e]pyran-12(13H)-one, and indeno[1,2-b]naphtho[3,2-e]pyran-5,11,13-trione catalyzed by reusable polyvinylpolypyrrolidone-supported triflic acid