In 2019,Journal of Molecular Structure included an article by Maddila, Surya Narayana; Maddila, Suresh; Khumalo, Mandlenkosi; Bhaskaruni, Sandeep V. H. S.; Jonnalagadda, Sreekantha B.. Reference of 2-Methoxybenzaldehyde. The article was titled 《An eco-friendly approach for synthesis of novel substituted 4H-chromenes in aqueous ethanol under ultra-sonication with 94% atom economy》. The information in the text is summarized as follows:
An operational approach for synthesis of eleven substituted 4H-chromene derivatives I (R = 2-CH3OC6H4, 4-CF3C6H4, pyridin-3-yl, etc.; R1 = Me, Et) by one-pot, three-component reaction of aromatic aldehydes RCHO, Me/Et cyanoacetate and 5,5 di-Me 1,3-cyclohexadione through ultrasound irradiation, in the presence of aqueous ethanol under catalyst-free condition is reported. Different spectral methods, including 1H, 13C and 15N NMR and HRMS were utilized to characterize the new mols. Benefits of the eco-friendly method are fast reaction (10 min), excellent yields (92-98%), no column chromatog. and no byproducts. Reaction offers 94% atom economy and 100% carbon capture. In the part of experimental materials, we found many familiar compounds, such as 2-Methoxybenzaldehyde(cas: 135-02-4Reference of 2-Methoxybenzaldehyde)
2-Methoxybenzaldehyde(cas: 135-02-4) is used as a flavor agent in foods including nonalcoholic/alcoholic beverages, baked goods, chewing gum, confections, frozen dairy, fruit ices, hard/soft candy, instant coffee, tea, Jams, jellies, and milk products. It also has been used to obtain good enantioselectivities using Cu(OAc)(2)-bis(oxazolines) via hydrogen bonding in asymmetric Henry reaction.Reference of 2-Methoxybenzaldehyde
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem