Synthesis and Chemical Properties of Benzo[e]-1,2-Oxaphosphorinine Derivatives—Analogues of Coumarins
摘要:
The 4-aryl(alkyl)benzo[e]-1,2-oxaphosphorine derivatives (phosphacoumarins) were obtained by the reaction of 2,2,2-trihalogenobenzo[d]-1,3,2-dioxaphospholes with terminal acetylenes. The reactions of phosphacoumarins with halogens and Grignard reagents were investigated.
Synthesis of racemic P-chiral phosphine oxides and phosphonium salts by stepwise reaction of phosphacoumarins with organomagnesium compounds
作者:Dmitry A. Tatarinov、Denis M. Kuznetsov、Robert R. Fayzullin、Vladimir F. Mironov
DOI:10.1016/j.jorganchem.2020.121313
日期:2020.7
A new effective synthetic route to the racemicphosphine oxides and phosphonium salts with a P-asymmetric center was developed based on the stepwise reaction of phosphacoumarins with organomagnesium compounds. A selective P–C bond formation was achieved on each step owing to the differences in reactivity of the exocyclic P–Cl or P–O bonds and endocyclic P–O bond of phosphacoumarins. It was found that