21095-64-7Relevant academic research and scientific papers
p-Toluenesulfonic acid-catalyzed metal-free formal [4?+?1] heteroannulation via N[sbnd]H/O[sbnd]H/S[sbnd]H functionalization: One-pot access to 2-aryl/hetaryl/alkyl benzazole derivatives
Srivastava, Abhijeet,Shukla, Gaurav,Singh, Maya Shankar
, p. 879 - 887 (2017/01/25)
A concise and direct one-pot [4?+?1] synthetic strategy for the construction of 2-substituted benzazoles such as benzoxazoles and benzothiazoles has been disclosed in high yields (80–98%) by cascade coupling reaction of 2-amino(thio)phenols with β-oxodithioesters. The current approach enables N[sbnd]H/O[sbnd]H/S[sbnd]H functionalization in one-pot under solventless condition leading to diverse benzazoles without use of any external metal. A wide range of 2-amino(thio)phenols and β-oxodithioesters are compatible toward this transformation with excellent functional group tolerance. Furthermore, we preempt the wider implications of this novel strategy by demonstrating its compatibility toward versatile diversification of DNA Topoisomerase-II inhibitors.
Asymmetric Friedel-Crafts alkylation of indoles with 2-nitro-3-arylacrylates catalyzed by a metal-templated hydrogen bonding catalyst
Liu, Jingfen,Gong, Lei,Meggers, Eric
supporting information, p. 4653 - 4656 (2015/08/06)
Abstract An asymmetric Friedel-Crafts alkylation of indoles with 2-nitro-3-arylacrylates catalyzed by a metal-templated hydrogen bonding catalyst has been established. The asymmetric induction relies on chirality transfer solely from the octahedral metal
Benzoxazoles as transthyretin amyloid fibril inhibitors: Synthesis, evaluation, and mechanism of action
Razavi, Hossein,Palaninathan, Satheesh K.,Powers, Evan T.,Wiseman, R. Luke,Purkey, Hans E.,Mohamedmohaideen, Nilofar N.,Deechongkit, Songpon,Chiang, Kyle P.,Dendle, Maria T. A.,Sacchettini, James C.,Kelly, Jeffery W.
, p. 2758 - 2761 (2007/10/03)
Benzoxazoles pevent misfolding: Benzoxazole-based inhibitors of transthyretin (TTR) amyloid fibril formation are among the most effective found to date. They stabilize TTR against both acid-mediated misfolding and urea denaturation by raising the activati
