74117-31-0Relevant articles and documents
An easy-to-operate n-carbonylation of indoles with diaryl carbonates as reagent and Na2CO3 as catalyst
Zhou, Xiao-Yu,Chen, Xia
, p. 1854 - 1862 (2020)
Na2CO3 catalyzed N-carbonylation of indoles using diaryl carbonates as acylation reagent have been developed. It provided an efficient and simple method for the utilization of carbonates and the synthesis of N-carbonyl indoles. The reaction can be operated easily with Na2CO3 as catalyst in CH3CN and the corresponding products were isolated with good to excellent yields.
A simple direct phosgeneless route to N-heteroaryl unsymmetrical ureas
Carafa, Marianna,Mele, Valentina,Quaranta, Eugenio
scheme or table, p. 217 - 225 (2012/03/26)
A new simple approach to the synthesis of unsymmetrical ureas HetNC(O)NRR′ (HetNH = pyrrole, indole, carbazole; R, R′ = H, alkyl, aryl) has been explored, which involves the direct reaction of the N-phenoxycarbonyl derivatives of pyrrole, indole and carba
Superbase-promoted direct N-carbonylation of pyrrole with carbonic acid diesters
Carafa, Marianna,Distaso, Monica,Mele, Valentina,Trani, Francesca,Quaranta, Eugenio
, p. 3691 - 3696 (2008/09/20)
Carbonic acid diesters have been investigated as carbonylating agents in the direct reaction with pyrrole (HetNH). In the presence of superbases (DBU, P1-t-Bu, BTPP) as catalysts, the heteroaromatic substrate can be N-carbonylated by direct reaction with carbonic acid diesters under not-severe experimental conditions. The carbonylation reaction makes accessible pyrrole N-carbonyl derivatives (HetNC(O)OR, (HetN)2CO) selectively through a simple straightforward way, which offers a safe eco-friendly alternative to the traditional synthetic methods based on hazardous phosgene or phosgene-derivatives.