Synthesis of crystal violet lactone with urea technology was written by Tan, Tao;Bao, Chuanping;Ding, Yigang;Ding, Xiaojuan;Hu, Xiong. And the article was included in Yingyong Huagong in 2007.Recommanded Product: 1552-42-7 This article mentions the following:
LCVL was prepared by heating a certain ratio of urea, p-dimethylaminobenzaldehyde and N,N-dimethylaniline mixed and refluxed in the hydrochloric acid and under the protection of nitrogen at about 80° for 0.5 h, then reacted 5.5 h in the presence of m-dimethylaminobenzoic acid at about 93°C with 65% yield of LCVL. With potassium ferricyanide used as catalyst, LCVL dissolved in sodium hydroxide was oxidized to CVL by inpouring the air for 18 h. The yield of CVL was 90.50%. In the experiment, the researchers used many compounds, for example, Crystal violet lactone (cas: 1552-42-7Recommanded Product: 1552-42-7).
Crystal violet lactone (cas: 1552-42-7) belongs to benzofurans derivatives. Benzofuran derivatives are one of the most important oxygen-containing heterocycles. They are also prone to polymerisation in the presence of concentrated mineral acids and Lewis acids.Recommanded Product: 1552-42-7
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem