AN EFFICIENT REGIO- AND STEREOSPECIFIC ALKENYLATION OF PHENOLIC ETHERS BY PRENYL AND GERANYL DIISOPROPYL PHOSPHATES
作者:Shuki Araki、Shin-ichi Manabe、Yasuo Butsugan
DOI:10.1246/cl.1982.797
日期:1982.6.5
Prenyl and geranyl diisopropyl phosphates readily alkenylate a variety of phenolic ethers regio- and stereospecifically without any appreciable side reactions.
异戊二烯基和香叶基二异丙基磷酸酯很容易使各种酚醚区域和立体特异性地烯基化,而没有任何明显的副反应。
Palladium-catalyzed cross-coupling reactions of organogold(i) phosphanes with allylic electrophiles
作者:Miguel Peña-López、Miguel Ayán-Varela、Luis A. Sarandeses、José Pérez Sestelo
DOI:10.1039/c2ob06788a
日期:——
as cinnamyl and geranyl halides (bromide, chloride and acetates) under palladium catalysis in THF at 80 °C to afford the α-substitution product with moderate to high yields. When the reaction is performed with a chiral enantiopure secondary acetate, the α-substituted cross-coupling product is obtained with complete inversion of the stereochemistry.
Chemodivergent, Tunable, and Selective Iodine(III)-Mediated Bromo-Functionalizations of Polyprenoids
作者:Tatyana D. Grayfer、Pascal Retailleau、Robert H. Dodd、Joëlle Dubois、Kevin Cariou
DOI:10.1021/acs.orglett.7b02125
日期:2017.9.15
Mild oxidation of bromides by iodine(III) reagents generated active electrophilic bromination species that were reacted with polyprenoids. By simple and minor variations of an I(III)/Br combination, the reactivity could be selectively steered toward dibromination, oxybromination, or bromocyclization, giving access to a wide array of brominated motifs.