76002-23-8Relevant academic research and scientific papers
β-Ketophosphonsaeureester aus α-chloroxiranen
Gasteiger, Johann,Herzig, Christian
, p. 2687 - 2688 (1980)
β-Ketophosphonic ester can be obtained by the treatment of α-chloroepoxides with trialkylphosphites.
A NEW ONE-POT SYNTHESIS OF β-KETOPHOSPHONATES
Baccolini, Graziano,Todesco, Paolo E.,Dalpozzo, Renato,Nino, Antonio de
, p. 271 - 274 (2007/10/03)
A new synthetic method for the preparation of β-ketophosphonates starting either from azoalkenes and PCl3 or from ketone hydrazones and PCl5 is reported.The reaction involves the addition of alcohols to a diazaphosphole intermediate.This synthesis allows
A New Synthesis of Cyclic β-Keto Phosphonates from α-Nitro Epoxides and a Dialkyl Phosphite
Kim, Dae Young,Kong, Myeon
, p. 3359 - 3360 (2007/10/02)
Cyclic β-keto phosphonates are readily prepared in good yields by the reaction of a dialkyl phosphite anion and α-nitro epoxides.
Reaction of 2-Chlorooxiranes with Phosphites and Phosphanes: A New Route to β-Carbonylphosphonic Esters and -phosphonium Salts
Herzig, Christian,Gasteiger, Johann
, p. 601 - 614 (2007/10/02)
Reaction of alkylsubstituted 2-chlorooxiranes 6 with trialkyl phosphites 11 gives β-carbonylphosphonic diesters (12a, b, 15a, b, 20a, 21a), free of isomeric enol phosphates or α,β-epoxyphosphonates. 2-Chloro-2-(chloromethyl)oxirane (6c) undergoes with 11 an Arbusov reaction followed by a Perkow reaction ( -> 18 -> 17).The limitation of the method is probed with sterically crowded substituents in 3-position of 6. 6b yields with triphenylphosphane a β-ketophosphonium salt (23), which can be converted to a keto-ylide (24).
