Synthesis of novel (p-substituted styryl) spirobenzopyrans
A series of (p-substituted styryl) spirobenzopyrans were synthesized by the Wittig reaction of Fisher's bases with 5-(p-substituted styryl) salicylaldehyde derivatives. The final spirobenzopyrans were characterized by the 1H NMR, IR, UV, and GC-MS analyses. Copyright Taylor & Francis Group, LLC.