Facile synthesis of dibranched conjugated dienes via palladium-catalyzed oxidative coupling of N-tosylhydrazones
作者:Huanfeng Jiang、Li He、Xianwei Li、Huoji Chen、Wanqing Wu、Wei Fu
DOI:10.1039/c3cc43593h
日期:——
developed. This process features readily available starting materials and mild reaction conditions. Further transformations of the obtained dibranched 1,3-dienes, through Diels-Alder reactions and indene synthesis, are also demonstrated, which reveal their great potential for synthetic utility.
Direct One-Pot Synthesis of 2,3-Diarylbuta-1,3-diene via Self-Coupling of Acetophenones
作者:Xueshun Jia、Jian Li、Shaoyu Li
DOI:10.1055/s-2008-1078412
日期:2008.6
A mild and straightforward route to 2,3-diarylbuta-1,3-diene is described here. By treatment with SmI(2)-Ac(2)O, acetophenone and its analogues underwent self-coupling reactions and subsequent elimination to give a series of 2,3-diarylbuta-1,3-dienes in moderate to good yields.
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