A Convenient (E)-Stereoselective Synthesis of Alkenylphosphonates
摘要:
Diethyl (E)-alkenylphosphonates have been prepared stereoselectively by dehydration of the corresponding beta-hydroxyphosphonates using DCC/CuCl2 in refluxing toluene. Starting beta-hydroxyphosphonates were obtained in high yield from diethyl methylphosphonate.
A One Step Generation of α-Lithiotrimethylsilylalkanephosphonates. A New Preparative Route to Dialkyl 1-(Trimethylsilyl)alkanephosphonates and Vinylphosphonates
Rambaud, Monique; Vecchio, Anthony del; Villieras, Jean, Synthetic Communications, 1984, vol. 14, # 9, p. 833 - 842
作者:Rambaud, Monique、Vecchio, Anthony del、Villieras, Jean
DOI:——
日期:——
Efficient Approach to 4-Oxo-2-alkenylphosphonates via Regiospecific Friedel−Crafts Acylation
作者:Bum Sung Lee、Shi Yong Lee、Dong Young Oh
DOI:10.1021/jo0003504
日期:2000.6.1
Treatment of allylic and vinylic phosphonates with excess LiHMDS, followed by addition of chlorotrimethylsilane, afforded alpha- and gamma- silylated allylic phosphonate mixtures. Without separation, these mixtures underwent the Friedel-Crafts reaction and base-promoted isomerization to give 4-oxo-2-alkenylphosphonates, which can serve as building blocks for the construction of polyethylenic chains.
TEULADE, M. -P.;SAVIGNAC, PH.;ABOUJAOUDE, E. E.;LIETGE, S.;COLLIGNON, N., J. ORGANOMET. CHEM., 1986, 304, N 3, 283-300
作者:TEULADE, M. -P.、SAVIGNAC, PH.、ABOUJAOUDE, E. E.、LIETGE, S.、COLLIGNON, N.