Organobase catalysed one-pot exo-selective synthesis of meso-spiro[cyclohexanone-pyrandione] derivatives

2017 ◽  
Vol 41 (19) ◽  
pp. 10790-10798 ◽  
Author(s):  
Oualid Talhi ◽  
Hasnia Abdeldjebar ◽  
Yamina Belmiloud ◽  
Ridha Hassaine ◽  
Nadia Taibi ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Selective Synthesis ◽  
Conjugate Additions ◽  
One Pot ◽  
Metal Free

A facile metal-free one-pot exo-stereoselective synthesis of through two sequential organobase-catalysed 1,4-conjugate additions of pyran-2,4-diones on diarylideneacetone synthons is disclosed.

scholarly journals One-Pot Metal-Free Synthesis of 3-CF3-1,3-Oxazinopyridines by Reaction of Pyridines with CF3CO-Acetylenes

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3594 ◽  
Author(s):  
Muzalevskiy ◽  
Sizova ◽  
Belyaeva ◽  
Trofimov ◽  
Nenajdenko
Keyword(s):  
Stereoselective Synthesis ◽  
One Pot ◽  
Metal Free

The reaction of pyridines with trifluoroacetylated acetylenes was investigated. It was found that the reaction of various pyridines with two molecules of CF3CO-acetylenes proceeds under mild metal-free conditions. As a result, efficient stereoselective synthesis of 3-arylethynyl-3-trifluoromethyl-1,3-oxazinopyridines was elaborated. Target heterocycles can be prepared in up to quantitative yields.

ChemInform Abstract: One-Pot Three-Component Highly Selective Synthesis of Homoallylboronates by Using Metal-Free Catalysis.

ChemInform ◽  
2012 ◽  
Vol 43 (36) ◽  
pp. no-no
Author(s):  
Ismail Ibrahem ◽  
Palle Breistein ◽  
Armando Cordova
Keyword(s):  
Selective Synthesis ◽  
One Pot ◽  
Metal Free

Metal-free, one-pot highly selective synthesis of (E)-vinyl sulfones and sulfoxides via addition–oxidation of thiols with alkynes

2012 ◽  
Vol 53 (14) ◽  
pp. 1851-1854 ◽  
Author(s):  
Qicai Xue ◽  
Zhijie Mao ◽  
Yan Shi ◽  
Haibin Mao ◽  
Yixiang Cheng ◽  
...  
Keyword(s):  
Selective Synthesis ◽  
One Pot ◽  
Metal Free

One-Pot Three-Component Highly Selective Synthesis of Homoallylboronates by Using Metal-Free Catalysis

2012 ◽  
Vol 18 (17) ◽  
pp. 5175-5179 ◽  
Author(s):  
Ismail Ibrahem ◽  
Palle Breistein ◽  
Armando Córdova
Keyword(s):  
Selective Synthesis ◽  
One Pot ◽  
Metal Free

A novel one-pot method for the stereoselective synthesis of tetrahydropyrimidinones in a low melting mixture

2020 ◽  
Vol 18 (22) ◽  
pp. 4164-4168
Author(s):  
Pramila Devi ◽  
Mallikharjuna Rao Lambu ◽  
Sundarababu Baskaran
Keyword(s):  
Stereoselective Synthesis ◽  
Reaction Medium ◽  
One Pot ◽  
Metal Free

A metal free method for the stereoselective synthesis of tetrahydropyrimidinone from a vinyl arene has been developed using a low melting mixture as a novel reaction medium.

ChemInform Abstract: Metal-Free, One-Pot Highly Selective Synthesis of (E)-Vinyl Sulfones and Sulfoxides via Addition-Oxidation of Thiols with Alkynes.

ChemInform ◽  
2012 ◽  
Vol 43 (28) ◽  
pp. no-no
Author(s):  
Qicai Xue ◽  
Zhijie Mao ◽  
Yan Shi ◽  
Haibin Mao ◽  
Yixiang Cheng ◽  
...  
Keyword(s):  
Selective Synthesis ◽  
One Pot ◽  
Metal Free

Stereoselective synthesis of alkyl styryl selenides in one-pot: a straightforward approach by in situ dialkyl diselenide formation under transition metal-free conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105699-105706 ◽  
Author(s):  
Adrián A. Heredia ◽  
Alicia B. Peñéñory
Keyword(s):  
Transition Metal ◽  
Stereoselective Synthesis ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Straightforward Approach

One-pot synthesis of alkyl styryl selenides using KSeCN as selenium source.

Metal-Free Photoinduced Hydroalkylation Cascade Enabled by an Electron-Donor-Acceptor Complex

2020 ◽  
Author(s):  
José Tiago Menezes Correia ◽  
Gustavo Piva da Silva ◽  
Camila Menezes Kisukuri ◽  
Elias André ◽  
Bruno Pires ◽  
...  
Keyword(s):  
Electron Donor ◽  
Functional Group ◽  
Photoexcited Electron ◽  
One Pot ◽  
Quaternary Centers ◽  
Metal Free ◽  
Acceptor Complex ◽  
Catalyst Free ◽  
Donor Acceptor ◽  
Radical Cascade

A metal- and catalyst-free photoinduced radical cascade hydroalkylation of 1,7-enynes has been disclosed. The process is triggered by a SET event involving a photoexcited electron-donor-aceptor complex between NHPI ester and Hantzsch ester, which decomposes to afford a tertiary radical that is readily trapped by the enyne. <a>The method provides an operationally simple, robust and step-economical approach to the construction of diversely functionalized dihydroquinolinones bearing quaternary-centers. A sequential one-pot hydroalkylation-isomerization approach is also allowed giving access to a family of quinolinones. A wide substrate scope and high functional group tolerance was observed in both approaches</a>.

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