Title of article :
Direct formation of cyclobutenylphosphonates from 1-alkynylphosphonates and Cp2ZrCl2/2EtMgCl/2CuCl
Author/Authors :
Sinelnikove، نويسنده , , Yulia and Rubinstein، نويسنده , , Abraham and Srebnik، نويسنده , , Morris and Quntar، نويسنده , , Abed Al Aziz Al Quntar، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2009
Abstract :
Zirconacycles 2 prepared from 1-alkynylphosphonates 1, zirconocene dichloride, and 2 equiv of EtMgCl are smoothly converted into cyclobutenylphosphonates 3 when treated with two equiv of CuCl in 65–81% isolated yield. The reaction is specific and general only for zirconacyclopentenyl phosphonates.
Keywords :
Alkynylphosphonates , Diethylzirconocene , Copper chloride , cyclization , Cyclobutenylphosphonates
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
