Cyclodimerization of isocyanates promoted by one large vertex metallaborane was written by Ma, Pei;Spencer, James T.. And the article was included in Polyhedron in 2018.Related Products of 2387-23-7 This article mentions the following:
The 10-vertex Manganese-decaborane [nido-6-Mn(CO)3B9H13][NMe4] was found to act as an efficient catalyst for the synthesis of ureas I [R = allyl, n-Bu, cyclohexyl, Ph, Bn] via cyclodimerization of isocyanates under photo-irradiation conditions. The reaction yields were comparable with other metal catalyst reported in literature. Compound I [R = Ph] was characterized by X-ray crystallog. study and reaction mechanism was also proposed. The results are very encouraging as they represent first examples of a large metallaborane compound to catalyze the cyclodimerization of isocyanates. In the experiment, the researchers used many compounds, for example, 1,3-Dicyclohexylurea (cas: 2387-23-7Related Products of 2387-23-7).
1,3-Dicyclohexylurea (cas: 2387-23-7) belongs to amides. Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis. Amides can be recrystallised from large quantities of water, ethanol, ethanol/ether, aqueous ethanol, chloroform/toluene, chloroform or acetic acid. The likely impurities are the parent acids or the alkyl esters from which they have been made. The former can be removed by thorough washing with aqueous ammonia followed by recrystallisation, whereas elimination of the latter is by trituration or recrystallisation from an organic solvent.Related Products of 2387-23-7
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics