Cyclization of 1-(4,4-diethoxybutyl)-3-arylureas: a case study was written by Smolobochkin, Andrey V.;Gazizov, Almir S.;Voronina, Julia K.;Burilov, Alexander R.;Pudovik, Michail A.. And the article was included in Monatshefte fuer Chemie in 2018.Safety of 4-Chlororesorcinol The following contents are mentioned in the article:
The study on the reaction of (4,4-diethoxybutyl)ureas with nucleophilic aromatics was reported herein. It was found that the structure of the products mainly depends on the strength of the acid used as catalyst as well as aromatic nucleophile nature and its concentration Either 2-arylpyrrolidines e.g., (R,S)-2,2′-(4,6-Dihydroxy-5-methyl-1,3-phenylene)bis[N-(naphthalen-1-yl)pyrrolidine-1-carboxamide], diarylbutanes, 1-[4,4-Bis(5-chloro-2,4-dihydroxyphenyl)butyl]-3-(naphthalen-1-yl)urea, bispyrrole derivatives, N-(Naphthalen-1-yl)-4-[1-(naphthalen-1-ylcarbamoyl)pyrrolidin-2-yl]-2,3-dihydro-1H-pyrrole-1-carboxamide, or pyrrolidinequinazolinones can be synthesized via variation of these factors. The proposed mechanism of the reaction is discussed. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Safety of 4-Chlororesorcinol).
4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Safety of 4-Chlororesorcinol
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics