Palladium-Catalyzed Carbonylative Reactions of 1-Bromo-2-fluorobenzenes with Various Nucleophiles: Effective Combination of Carbonylation and Nucleophilic Substitution
A systematic study on the carbonylative transformation of 1‐bromo‐2‐fluorobenzenes with various nucleophiles has been performed. Different types of double nucleophiles, such as NN, NC, OC, and NS, can be effectively applied as coupling partners. The corresponding six‐membered heterocycles were isolated in moderate to good yields.
Microwave-assisted synthesis of quinazolinone derivatives by efficient and rapid iron-catalyzed cyclization in water
作者:Xiaodong Zhang、Deju Ye、Haifeng Sun、Diliang Guo、Jiang Wang、He Huang、Xu Zhang、Hualiang Jiang、Hong Liu
DOI:10.1039/b916124b
日期:——
A green, rapid, and efficient method was developed for synthesizing quinazolinone derivatives from substituted 2-halobenzoic acids and amidines via microwave-assisted iron-catalyzed cyclization with or without ligand in water (methods A and B) or DMF (methods C and D). With these methods, moderate to high yields of the desired products can be obtained from even inactive substrates, such as guanidines