[摘要]：An efficient synthesis of substituted furans was achieved from ketones by alkylation with 3-iodopropynylphosphonate and cyclization of the resulting 5-oxo-1-ynylphosphonates under mild conditions. The process can also be carried out as a one-pot reaction to give furan derivs. in excellent yields. The utilization of furyl phosphonates in Horner-Wadsworth-Emmons as well as one and two-step hydrogenations is also described.
