摘要:
Chelating phosphines are much higher performing than mono-dentate phosphines in palladium-catalyzed reaction of alpha,omega-diynes with HP(O)(RR2)-R-1 (R-1,R-2 = Ph, alkoxy) to afford (E)-3-(phosphorylmethylene)-2-methylcyclopentenes. (C) 2009 Elsevier Ltd. All rights reserved.