Samzadeh-Kermani, Alireza et al. published their research in Journal of Heterocyclic Chemistry in 2019 | CAS: 2387-23-7

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Amides are stable compounds. The lower-melting members (such as acetamide) can be readily purified by fractional distillation. Most amides are solids which have low solubilities in water.Computed Properties of C13H24N2O

A Catalytic Route to Pyrrole Derivatives via Copper-catalyzed Multicomponent Reaction was written by Samzadeh-Kermani, Alireza;Ghasemi, Samira. And the article was included in Journal of Heterocyclic Chemistry in 2019.Computed Properties of C13H24N2O This article mentions the following:

In the presence of CuI, Bu4P+·AcO–, and DBU in MeCN, terminal alkynes R1CCH (R1 = Ph, 3-MeC6H4, 3-MeOC6H4, 2-furyl, 2-thienyl, Bu, PhCH2CH2, Me3Si), carbodiimides R2N:C:NR3 (R2 = R3 = cyclohexyl, i-Pr, Ph; R2 = Ph, 4-MeC6H4, 4-ClC6H4, R3 = cyclohexyl; R2 = Ph, R3 = Bu), and malononitrile underwent regioselective three-component coupling and cyclization reactions to yield (alkylidene)iminopyrrolinecarbonitriles I (R1 = Ph, 3-MeC6H4, 3-MeOC6H4, 2-furyl, 2-thienyl, Bu, PhCH2CH2, Me3Si; R2 = R3 = cyclohexyl, i-Pr, Ph; R2 = Ph, 4-MeC6H4, 4-ClC6H4, R3 = cyclohexyl; R2 = Ph, R3 = Bu). In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Computed Properties of C13H24N2O).

1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds. Tertiary amides, with the important exception of N,N-dimethylformamide, exhibit low solubility in water. Amides are stable compounds. The lower-melting members (such as acetamide) can be readily purified by fractional distillation. Most amides are solids which have low solubilities in water.Computed Properties of C13H24N2O

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics