Rh-Catalyzed aldehydic C-H alkynylation and annulation
Novel Rh-catalyzed aldehydic C-H bond alkynylation and annulation for the in situ synthesis of chromones and aurones are described. It involves the sequential aldehyde C-H bond alkynylation of salicylaldehyde with in situ generated 1-bromoalkyne from 1,1-
Ramakrishna, Boddu S.,Rao, Maddali L. N.
p. 1402 - 1411
(2020/03/03)
Synthesis of Pyridobenzofurans
Some diarylpyridobenzofurans have been conveniently synthesised in 50-65percent yield by the condensation of 2-arylidene-6-methoxycoumaran-3-ones (III) with phenacylpyridinium halides in the presence of ammonium acetate.In a similar manner some 5-h
Sarbagya, D. P.,Rangachari, K.,Mazumdar, A. K. D.,Banerji, K. D.
p. 891 - 893
(2007/10/02)
Proximity Effects in the Electron Impact Mass Spectra of Aurones and Related Compounds
The principal ions in the electron impact mass spectra of a series of 6-methoxyaurones have been shown to be due to four separate reactions associated with proximity effects involving the phenyl group and the coumaran-one residue.A detailed study with lab
Goldsack, R. J.,Shannon, J. S.
p. 545 - 555
(2007/10/02)
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