133744-65-7Relevant academic research and scientific papers
Microwave-assisted periselective annulation of triarylphosphenes with aldehydes and ketones
Du, Changle,Fu, Xingyang,Fu, Zhicheng,Luo, Yun,Xu, Jiaxi
, p. 9526 - 9537 (2020)
The reaction of diazo(aryl)methyl(diaryl)phosphine oxides with aldehydes and ketones generates benzo-δ-phosphinolactones in low to good yields with 1,1-diarylalk-1-enes as byproducts under microwave irradiation. Diazo(aryl)methyl(diaryl)phosphine oxides first undergo a Wolff rearrangement to form diaryl(aryl)phosphenes, which further react with aldehydes and ketones to afford benzo-δ-phosphinolactones and β-phosphinolactones. The latter are unstable under heating and fragment into the corresponding 1,1-diarylalk-1-enes and arylphosphine dioxides under reaction conditions. The arylphosphine dioxides become arylphosphonic acids during workup. The periselectivity in the annulation shows that the reaction of diaryl(aryl)phosphenes with most aldehydes and ketones favors phosphene phenyl participation in (4 + 2) annulation(2 + 2) annulation. This journal is
The Correct Structure of Cyclic Adducts of (Diphenylmethylene)oxophenylphosphorane witn Aromatic aldehydes
Kawashima, Takayuki,Inamoto, Naoki
, p. 713 - 715 (2007/10/02)
The title cyclic adducts have been reported to be 4-aryl-2,3,3-triphenyl-1,2-oxaphosphetane 2-oxides.However, these compounds are concluded not to be the 1,2-oxaphosphetanes, but 1-aryl-3,4-diphenyl-3,4-dihydro-1H-2,3-benzoxaphosphorin 3-oxides from detailed NMR studies and the investigation of the chemical behavior of the adduct of benzaldehyde.
