Used in an efficient synthesis of fused pyrroloquinolinedicarboxylates from acetylenedicarboxylates and triphenylphosphine. 1.reactant for preparation of antiandrogens. 2.reactant for preparation of antiplatelet agent. 3.reactant for preparation of liver X receptor (LXR) agonists. 4.reactant for preparation of antagonists of the EP3 receptor for prostaglandin E2. 5.reactant for preparation of inhibitors of glycoprotein perforin. 6.reactant for preparation of potent antitubulin agents. 7.reactant for preparation of potential insulin receptor activators. 8.reactant for preparation of potential scaffolds for peptide mimetics. 9.reactant for preparation of 5-Hydroxytryptamine1D receptor antagonist. 10.reactant for preparation of indolocarbazole kinase inhibitors. Used in an efficient synthesis of fused pyrroloquinolinedicarboxylates from acetylenedicarboxylates and triphenylphosphine. 1.reactant for preparation of antiandrogens. 2.reactant for preparation of antiplatelet agent. 3.reactant for preparation of liver X receptor (LXR) agonists. 4.reactant for preparation of antagonists of the EP3 receptor for prostaglandin E2. 5.reactant for preparation of inhibitors of glycoprotein perforin. 6.reactant for preparation of potent antitubulin agents. 7.reactant for preparation of potential insulin receptor activators. 8.reactant for preparation of potential scaffolds for peptide mimetics. 9.reactant for preparation of 5-Hydroxytryptamine1D receptor antagonist. 10.reactant for preparation of indolocarbazole kinase