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Showing posts with label nmr. Show all posts
Showing posts with label nmr. Show all posts
Tuesday, 15 October 2019

Catalyst- and additive-free Baeyer–Villiger-type oxidation of α-iodocyclopentenones to α-pyrones: using air as the oxidant

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An efficient synthetic approach for the synthesis of α-pyrones  via  Baeyer–Villiger-type oxidation of α-iodocyclopentenones through a c...
137 comments:
Thursday, 5 September 2019

(R)-3-Chloro-2-hydroxypropyl-4-methoxybenzoate

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( R )-3-Chloro-2-hydroxypropyl-4-methoxybenzoate  10 To a stirred solution of ( R )-3-chloro-1,2-propanediol (6.61 g, 59.8 mmol)...
2 comments:
Wednesday, 27 March 2019

1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylic pivalic anhydride

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  1-(4-fluorophenyl)-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylic pivalic anhydride (10): tan solid, mp (DSC): onset = 172.4 °C, pe...
1 comment:
Wednesday, 30 January 2019

Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation

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Nickel-catalyzed regioselective C–H oxygenation: new routes for versatile C–O bond formation Org. Chem. Front. , 2019, Advance ...
Tuesday, 29 January 2019

Large scale synthesis of chiral (3Z,5Z)-2,7-dihydro-1H-azepine-derived Hamari ligand for general asymmetric synthesis of tailor-made amino acids.

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  ( R )-2,2′-bis(bromomethyl)-1,1′-binaphthalene (( R )- 17 ) was prepared in the identical manner and had identical analytical properti...

Photo-organocatalytic synthesis of acetals from aldehydes

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Abstract A mild and green photo-organocatalytic protocol for the highly efficient acetalization of aldehydes has been developed. Util...

Eco-friendly decarboxylative cyclization in water: practical access to the anti-malarial 4-quinolones

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Abstract An environmentally benign decarboxylative cyclization in water has been developed to synthesize 4-quinolones from readily av...

A solvent-free catalytic protocol for the Achmatowicz rearrangement

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Abstract Reported here is the development of an environmentally friendly catalytic (KBr/oxone) and solvent-free protocol for the Achm...
1 comment:
Monday, 10 December 2018

(1S,4R)-2-(4-Methoxybenzoyl)bicyclo[2.2.2]octa-2,5-diene

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  (1S,4R)-2-(4-Methoxybenzoyl)bicyclo[2.2.2]octa-2,5-diene (3a) Yellow liquid (25.2 mg, 95% yield): 1H NMR (300 MHz, CDCl3)   ...