《Green chemistry: efficient acetalization of aldehydes with alcohols using the acid red 52 photocatalyst》 was published in Environmental Chemistry Letters in 2020. These research results belong to Yu, Linyu; Lin, Chuyuan; Liao, Chunshu; Zeng, Xianghua; Chen, Xiuwen; Zhu, Zhongzhi; Huang, Yubing; Li, Yibiao; Chen, Lu. Quality Control of o-Bromobenzaldehyde The article mentions the following:
A sodium 4-[6-(diethylamino)-3-(diethyliminio)-3H-xanthen-9-yl]benzene-1,3-disulfonate (acid red 52) is used here as photocatalyst under yellow light irradiation A wide array of acyclic and cyclic acetals R1CH(OR2)2 (R1 = 4-fluorophenyl, 2-phenylethynyl, 3-methoxyphenyl, etc.; R2 = Et, methyl) and 2-(4-chlorophenyl)-1,3-dioxolane in 75-93% yields was obtained. Results show the efficient acetalization of aldehydes R1CHO with alcs. R2OH and ethylene glycol at room temperature, the use of abundant and sustainable alcs. as both the solvents and coupling agents, low catalyst loading, short reaction time, and readily available catalyst, which might be applied to green-catalyzed systems.o-Bromobenzaldehyde(cas: 6630-33-7Quality Control of o-Bromobenzaldehyde) was used in this study.
o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Quality Control of o-BromobenzaldehydeIt is a key starting material in the total synthesis of an anticancer agent, (-)-taxol.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary