Webb1 okt. 2013 · The aza-Piancatelli reaction mechanism is explored using density functional theory (DFT) calculations to understand the influence of the different substituents on … WebbIn organic chemistry, the oxy-Cope rearrangement is a chemical reaction. It involves reorganization of the skeleton of certain unsaturated alcohols. It is a variation of the Cope rearrangement in which 1,5-dien-3-ols are converted to unsaturated carbonyl compounds by a mechanism typical for such a [3,3]- sigmatropic rearrangement. [1] [2]
The Piancatelli Reaction and its Variants: Recent ... - ResearchGate
WebbThe Piancatelli reaction, also called the Piancatelli rearrangement, consists in the direct conversion of furfuryl alcohols to cyclopentenone derivatives through a furan ring … Webb28 juni 2024 · Abstract Piancatelli rearrangement of furyl carbinols is a relevant reaction to produce cyclopentenone derivatives. However, on a large scale, Piancatelli rearrangement suffers from several... the princess way
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Webb31 mars 2024 · The Piancatelli Reaction - 科研通 已完结 文献求助详情 上个求助 相关文献 5.18 The Nazarov Cyclization Chemistry of heterocyclic N-oxides and related compounds. V. Dehydrogenation of the Hantzsch ester b... ChemInform Abstract: Efficient Synthesis of Fluorinated Secondary Alcohols by Reaction of Polyfluoro... Webb2 nov. 2016 · The first catalytic asymmetric Piancatelli reaction is reported. Catalyzed by a chiral Brønsted acid, the rearrangement of a wide range of furylcarbinols with a series of aniline derivatives provides valuable aminocyclopentenones in high yields as well as excellent enantioselectivities and diastereoselectivities. WebbPiancatelli proposed a mechan istic hypothesis that resem-bles closely the Nazarov reaction (Scheme 1, a).5 In a Nazarov reaction, a divinyl ketone (1) is transformed to a cyclopentenone (2) in acidic media via a concerted ring closure of a pentadienyl cation (A) to a hydroxycyclopen-tyl cation (B). In the Piancatelli rearrangement (Scheme 1, the princess was followed by five or six