6330-40-1Relevant articles and documents
K2S2O8mediated synthesis of 5-Aryldipyrromethanes and meso-substituted A4-Tetraarylporphyrins
Laha, Joydev K.,Hunjan, Mandeep Kaur
, p. 664 - 673 (2021/06/03)
The synthesis of dipyrromethanes from pyrrole and arylglyoxylic acids in the presence of K2S2O8at 90 C is reported affording dipyrromethanes in very good yields. Unlike an excess pyrrole traditionally used in dipyrromethane synthesis, the current method uses a stoichiometric amount of pyrrole avoiding any use of Br?nsted or Lewis acid. A gram scale synthesis of 5-phenyldipyrromethane is also achieved demonstrating potential scale up of dipyrromethanes using this method feasible. Subsequently, dipyrromethanes were converted to A4tetraarylporphyrins also in the presence of K2S2O8at 90C. A direct synthesis of A4-tetraphenylporphyrin from excess pyrrole and phenylglyoxylic acid in the presence of K2S2O8 at 90C is also reported.
CERTAIN PROTEIN KINASE INHIBITORS
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Paragraph 0647, (2017/05/07)
Disclosed herein are protein kinase inhibitors, more particularly pyridazine derivatives and pharmaceutical compositions thereof, and method of use thereof.
Palladium-catalyzed decarboxylative acylation of O-methyl ketoximes with α-keto acids
Kim, Minyoung,Park, Jihye,Sharma, Satyasheel,Kim, Aejin,Park, Eonjeong,Kwak, Jong Hwan,Jung, Young Hoon,Kim, In Su
supporting information, p. 925 - 927 (2013/02/23)
A mild, practical and efficient palladium-catalyzed decarboxylative ortho-acylation of O-methyl ketoximes with α-keto acids via C-H bond activation is described. In these reactions, a broad range of O-methyl ketoximes and α-keto acids undergoes the decarboxylative cross-coupling reactions with high selectivities and good tolerance. The Royal Society of Chemistry 2013.