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Synthesis of urea derivatives via reductive carbon dioxide fixation into contracted porphyrin analogues

Author:
Patra, Sajal Kumar, Sahu, Kasturi, Patra, Bratati, Sahoo, Dipak Kumar, Mondal, Sruti, Mukherjee, Payel, Biswal, Himansu S., Kar, Sanjib
Source:
Green chemistry 2017 v.19 no.24 pp. 5772-5776
ISSN:
1463-9270
Subject:
ammonium carbonate, carbon dioxide, carbon dioxide fixation, green chemistry, porphyrins, toxic substances, urea
Abstract:
Carbon dioxide from ammonium carbonate is trapped by the free base corroles with the help of two adjacent inner NH groups (N²¹ and N²²) and forms the N²¹,N²²-carbamide-corrole derivatives. There is an extensive literature on functionalized ureas and their potent pharmaceutical applications. While the aliphatic, aromatic, alicyclic, and heterocyclic analogues of differently substituted ureas are well established, the N²¹,N²²-carbamide-porphyrinoid derivatives have been reported rarely. Herein we present a new synthetic protocol to synthesize N²¹,N²²-carbamide-corroles. These results thus open a greener avenue (without using any toxic chemicals like phosgene, CO, or isocyanate) for functionalized urea derivatives bearing porphyrinoid analogues.
Agid:
6400186