1,1-Alkenylboration of diarylphosphino-enynes: convenient synthetic entry to vicinal P/B Lewis pairs at extended conjugated π-frameworks.
Alkenylboranes R-CH=CH-B(C6F5)2 undergo carbon-carbon coupling by means of 1,1-alkenylboration with diarylphosphino-enynes to give substituted conjugated hexatriene derivatives that bear a vicinal pair of B(C6F5)2 Lewis acid and PAr2 Lewis base functionalities at their central carbon portions. A series of six examples was prepared and all compounds were characterized by X-ray diffraction. Consecutive reactions of two selected examples were carried out.
Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany. erker@uni-muenster.de.
Guo-Qiang
GQ
Chen
Gerald
G
Kehr
Constantin G
CG
Daniliuc
Gerhard
G
Erker