Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of 1,5-Diphenylpenta-1,4-dien-3-one, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 538-58-9
Synthesis of 2-aryl-2,3-dihydro-4-styrylpyrimidodiazepines in the reaction of 4,5,6-triaminopyrimidine and 2,4,5,6- tetraaminopyrimidine with diarylidenacetones
New 6-amino and 6,8-diamino-2-aryl-2,3-dihydro-4-styryl-1H- pyrimido[4,5-b][1,4]diazepines were obtained in the reaction of 2,4,5,6-tetraaminopyrimidine 1a and 4,5,6-triaminopyrimidine 1b with one equivalent of the diarylideneacetones 2 in absolute ethanol with acetic acid as the catalyst. Structure analysis of 6-amino and 6,8-diamino-2-aryl-2,3-dihydro-4-styryl-1H- pyrimido[4,5-b][1,4]diazepines 3a-i, determined by detailed nmr measurements, reveals a high regioselectivity of this reaction.
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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate