Katariya, Ashishkumar P. published the artcileIonic Liquid Promoted Regio-Selective Synthesis of 2-Methyl amino-3-Nitro-pyrano[3,2-c]chromen-5-ones, Related Products of ethers-buliding-blocks, the publication is ChemistrySelect (2022), 7(23), e202201295, database is CAplus.
An efficient, and simple protocol for the synthesis of extremely functionalized pyrano[3,2-c]chromen-5-ones has been developed. One-pot multicomponent cyclo-condensation of 4-hydroxycoumarin, aromatic-aldehydes, and (E)-N-methyl-1-(methylthio)-2-nitroethenamine (NMSM) catalyzed by ionic liquid [(EMIM)Ac] in two different methods as methanolic mediated and at solvent free condition is described which presumably involve the Knoevenagel reaction succeeding Michael-addition and O-cyclization with elimination of methanethiol. The noteworthy features of this protocol are use of ionic liquid as catalyst, good to excellent yield, optimum reaction time with easy exptl. procedure.
ChemistrySelect published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, Related Products of ethers-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem