Transition metal-free functionalized hydration of alkynes: one-pot synthesis of fluorinated β-keto-imidates using Selectfluor
作者:Arnab Ghosh、Rajeev Hegde、Vitthal B. Makane、Balasubramanian Sridhar、Haridas B. Rode、Siddappa A. Patil、Ramesh B. Dateer
DOI:10.1039/c9ob00527g
日期:——
metal-free, four-component one-pot synthesis of polyfunctionalized fluorinated β-keto-imidates via the functionalized hydration of alkynes has been described. The intermediate 1,3-ketoamino moiety was obtained from easily accessible arylpropioladehyde and arlyhydroxylamine and was treated with Selectfluor delivering fluorinated β-keto-imidates. A wide variety of functional groups are tolerated under mild
One-Pot Formation of Chiral Polysubstituted 3,4-Dihydropyrans via a Novel Organocatalytic Domino Sequence Involving Alkynal Self-Condensation
作者:Li-Jin Dong、Tian-Tian Fan、Chao Wang、Jian Sun
DOI:10.1021/ol3032285
日期:2013.1.4
The self-condensation of alkynals was for the first time implemented under mild organocatalytic conditions and was successfully linked with a domino organocatalytic inverse-electron-demand oxa-Diels–Alder reaction, which led to the development of a facile one-pot method to produce a wide variety of polysubstituted chiral 3,4-dihydropyrans with good to high yields and diastereoselectivities and high
Catalyst- and Additive-Free Approach to Constructing Benzo-oxazine, Benzo-oxazepine, and Benzo-oxazocine: O Atom Transfer and C═O, C–N, and C–O Bond Formation at Room Temperature
作者:Arnab Ghosh、Rajeev V. Hegde、Haridas B. Rode、Ram Ambre、Manoj V. Mane、Siddappa A. Patil、Balasubramanian Sridhar、Ramesh B. Dateer
DOI:10.1021/acs.orglett.1c02895
日期:2021.11.5
propanal and 2-(hydroxyamino)phenyl alcohol under metal-free conditions is described. O atom transfer and formation of new C═O, C–N, and C–O bonds occur at room temperature to form six-, seven-, and eight-memberedheterocycles under one-pot reaction conditions without using an external oxidant and base. The photophysical properties are studied using ultraviolet–visible absorption and photoluminescence. The