... Synlett 2010(11): 1674-1678 DOI: 10.1055/s ... In the past several decades, quite a number of methods have been developed, including Bischler-Napieralski cyclizations with P 4 O 10 , POCl 3 , or PCl 5 under high-temperature conditions [³] and some recent achievements ...
[Banwell, Martin G.; Jones, Matthew T.; Loong, David T.J.; Lupton, David W.; Pinkerton, David M.; Ray, Jayanta K.; Willis, Anthony C. Tetrahedron, 2010 , vol. 66, # 47 p. 9252 - 9262]