作者:Daniel Thiel、Fabian Blume、Christina Jäger、Jan Deska
DOI:10.1002/ejoc.201800333
日期:2018.6.7
HUOM! TAMA MANUSKA ON TILASSA CLOSED KUNNES ARTIKKELI ON JULKAISTU JA JULKAISUVIIVE MAARITELTY KUSTANTAJAN JULKAISUPAIVASTA ALKAEN. The manuscript is "closed" until the article has been published and the embargo date can be defined.
呼!蒂拉萨岛上的 TAMA MANUSKA 关闭了 JULKAISTU JA JULKAISUVIIVE MAARITELTY KUSTANTAJAN JULKAISUPAIVASTA ALKAEN 的 KUNNES ARTIKKELI。在文章发表并且可以确定禁运日期之前,手稿处于“关闭”状态。
Visible-Light-Mediated Achmatowicz Rearrangement
作者:Matthew B. Plutschack、Peter H. Seeberger、Kerry Gilmore
DOI:10.1021/acs.orglett.6b03237
日期:2017.1.6
method to access highly reactive intermediates from cheap, readily available, and shelf-stable reagents to perform clean chemical transformations. Here, we report the first photoredox-catalyzed Achmatowicz reaction of furfuryl alcohol derivatives to produce functionalized dihydropyranones while only forming easily separable NaHSO4 as a byproduct. The water solubility of the byproduct facilitates direct
Two catalytic protocols for Achmatowicz rearrangement using cyclic diacyl peroxides as oxidants
作者:Congyin Wei、Rong Zhao、Zhihong Shen、Denghu Chang、Lei Shi
DOI:10.1039/c8ob01382a
日期:——
In situ generated bromonium-catalyzed and visible-light photocatalytic Achmatowiczrearrangements of furfuryl alcohols using cyclic diacyl peroxides as oxidants are described. Both protocols feature broad substrate scope, excellent functional group tolerance, and mild reaction conditions, affording the synthetically useful dihydropyranone derivatives in good yields.
Divergent Synthesis of Dihydropyranone Stereoisomers via N‐Heterocyclic Carbene Catalysis
作者:Changgui Zhao、Jian Wang
DOI:10.1002/adsc.201801639
日期:2019.4
We recently developed a novel chiral N‐heterocyclic carbene (NHC) catalyzed dynamic kinetic enantioselective acylation (DKEA) and dynamic kinetic diastereoselective acylation (DKDA) of Achmatowicz rearrangement products to generate useful intermediates for the further synthesis of carbohydrates. In this update, we describe a divergent NHC catalytic strategy for the stereoselective preparation of all
The Paterno-Buchi reaction between 2-furylmethanol derivatives and aromatic carbonyl compounds shows good regioselectivity and high stereoselectivity. The regio- and stereoselectivity of the reaction can be explained by assuming a role of both the substituent on the 2-furylmethanol derivative and the hydroxy group in order to favor the approach of the carbonyl group towards a prochiral face of the