Synthesis of Five-Membered Cyclic Phosphinic Acids via the [4C+1P] Cyclization of 1,3-Dienes with a Combination of PBr<sub>3</sub> and P(OMe)<sub>3</sub> as the P<sup>(III)</sup> Source
作者:Ang Li、Fu-She Han
DOI:10.1021/acs.joc.3c00567
日期:2023.9.1
efficient method for the synthesis of 1-hydroxy-2,5-dihydrophosphole 1-oxides, a type of five-membered P-containing heterocyclic compound, is presented. The reaction was carried out through a [4C+1P] cyclization of 1,3-dienes with a combination of PBr3 and P(OMe)3 as the P(III) source. To compare with the reported methods, the protocol reported herein not only is much milder and more rapid but also