نتایج جستجو برای: aromatic aldehydes
تعداد نتایج: 48669 فیلتر نتایج به سال:
Ionization of aliphatic and aromatic aldehydes is improved by performing simultaneous chemical derivatization using 4-aminophenol to produce charged iminium ions during paper spray ionization. Accelerated reactions occur in the microdroplets generated during the paper spray ionization event for the tested aldehydes (formaldehyde, n-pentanaldehyde, n-nonanaldehyde, n-decanaldehyde, n-dodecanalde...
a convenient and efficient procedure for the synthesis of 14-aryl or alkyl-14h-dibenzo[a,j]xanthenes by condensation of 2-naphthol and aldehydes in the presence of methylimidazolium hydrogensulfate, as a brönsted acidic ionic liquid ([hmim]hso4), is described. both aromatic and aliphatic aldehydes reactedeasily to afford the corresponding 14-aryl or alkyl-14h-dibenzo[a,j]xanthenes in good yield...
3,4-ِdihydropyrano[c]chromene derivatives were synthesized using sulfonic acid functionalized silica (sio2-pr-so3h) as a highly efficient heterogenous solid acid catalyst via one-pot three-component condensation of aromatic aldehydes with malononitrile and 4-hydroxycoumarin in excellent yields.
Protonated N'-benzyl-N'-l-prolyl-l-proline hydrazide has been developed as a highly enantioselective catalyst for the asymmetric direct aldol reaction of aromatic aldehydes with ketones.
Cross-coupling of aromatic aldehydes or benzoins with unactivated imines catalyzed by an N-heterocyclic carbene (NHC) affords alpha-amino ketones smoothly.
The one-pot reaction of aromatic aldehydes, ethylenediamine and Oxone (2 KHSO5 x KHSO4 x K2SO4) in pure water was found to unexpectedly afford aldoximes in excellent yields.
Under mechanical milling conditions, direct reductive benzylizations of malononitrile and 4-methylaniline by aromatic aldehydes were achieved using a Hantzsch 1,4-dihydropyridine as the reductant.
A novel rhodium-catalyzed oxidative decarbonylative homocoupling of aromatic aldehydes to generate biaryls and diarylketones selectively and efficiently, triggered by the choice of different phosphine ligands.
A one-pot synthesis of 2-arylbenzothiazoles from the reaction of 2-aminothiophenol and aromatic aldehydes catalysed by cerium (IV) ammonium nitrate (CAN) is reported.
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