A novel and facile synthesis of 3-(2-benzofuroyl)- and 3,6-bis(2-benzofuroyl)carbazole derivatives

• Wentao Gao,
• Meiru Zheng and
• Yang Li

Beilstein J. Org. Chem. 2011, 7, 1533–1540, doi:10.3762/bjoc.7.180

• Wentao Gao Meiru Zheng Yang Li Institute of Superfine Chemicals, Bohai University, Jinzhou 121000, China 10.3762/bjoc.7.180 Abstract A facile synthesis of hitherto unreported 3-(2-benzofuroyl)carbazoles 3a–k, 3,6-bis(2-benzofuroyl)carbazoles 5a–k, and naphtho[2,1-b]furoylcarbazoles 3l and 5l is

• easy access to benzofuroylcarbazoles in short reaction times and the products are obtained in moderate to good yields. Keywords: 2-benzofuroyl; carbazole; PEG-400; Rap–Stoermer reaction; salicylaldehydes; ultrasound-assisted; Introduction Carbazole, and especially heterocycle-containing carbazole

• . Therefore, we report herein the synthesis of a series of novel 3-(2-benzofuroyl)carbazoles and 3,6-bis(2-benzofuroyl)carbazoles. Results and Discussion In order to synthesize the targeted compounds through a facile and direct methodology, we devised a route that made use of the Rap–Stoermer reaction [46