• Horner-Wadsworth-Emmons olefination (see Appendix 1) with carbonyl compounds yields vinylphosphonates: Synth. Commun., 10, 299 (1980). A synthesis of allenes via a double HWE olefination has been described: Tetrahedron, 58, 83 (2002):
• gem-Bisphosphonates have application in bone tissue therapy: Synthesis, 661 (1991).