(2-Ethoxy-1-propenyl)triphenylphosphonium Iodide

[62639-97-8] C23H24IOP (MW 474.29) InChI = 1S/C23H24OP.HI/c1-3-24-20(2)19-25(21-13-7-4-8-14-21,22-15-9-5-10-16-22)23-17-11-6-12-18-23;/h4-19H,3H2,1-2H3;1H/q+1;/p-1 InChIKey = USVXHKAXMCEZRL-UHFFFAOYSA-M (precursor for 2-ethoxyallylidenetriphenylphosphorane, which is a three-carbon annulation reagent1) Physical Data: mp 163–165 °C. Preparative Methods: by the condensation of Ethyl Iodide with 1-triphenylphosphoranylidene-2-propanone.2 Purification: recrystallization from methanol–ethyl acetate. Handling, Storage, and Precautions: should be dried in vacuo for best results.