40484-98-8Relevant articles and documents
De novo synthesis of benzofurans via trifluoroacetic acid catalyzed cyclization/oxidative aromatization cascade reaction of 2-hydroxy-1,4-diones
Sha, Qiang,Liu, Haixuan
, p. 7547 - 7551 (2019/08/20)
A facile, one-pot method for the de novo synthesis of benzofurans from 2-hydroxy-1,4-diones is described. Using trifluoroacetic acid (TFA) as the catalyst and N-bromobutanimide (NBS) as the oxidant, 2-hydroxy-1,4-diones underwent a cyclization/oxidative a
Synthesis of oxacalothrixin B and its analogues involving iodine/TBHP-mediated electrocyclization
Ramalingam, Bose Muthu,Mohanakrishnan, Arasambattu K.
, p. 2919 - 2922 (2017/07/11)
The total synthesis of oxacalothrixins, an isostere of biologically important carbazoloquinone alkaloid, calothrixin B was achieved from 2-acetyl-3-methylbenzofuran. An iodine/TBHP-mediated oxidative cyclization of benzofuranyl-enamine has been employed as a key step to synthesize, the crucial intermediate 1-hydroxy dibenzofurancarbaldehyde. The latter upon reductive cyclization followed by PIDA-mediated oxidation furnished oxacalothrixin B and its analogues.
Reporting the release of caged species by a combination of two sequential photoreactions, a molecular switch, and one color of light
Wu, Tuoqi,Tang, Hao,Bohne, Cornelia,Branda, Neil R.
, p. 2741 - 2744 (2012/05/04)
In the right light: UV light triggers bond breaking, liberates a caged carboxylic acid, and generates the central C=C double bond in the photoresponsive hexatriene molecule of a dithienylethene molecular switch. Light of the same wavelength converts the colorless isomer into its colored counterpart (see picture) in a visually convenient method to report on the success of the release event. Copyright