A highly effi cient procedure for the synthesis of quinoxaline derivatives using polyvinylpolypyrrolidone supported trifl ic acid catalyst (PVPP·OTf)

Samad Khaksar, Mahmoud Tajbakhsh, Milad Gholami, Fariba Rostamnezhad

Samad Khaksar, Mahmoud Tajbakhsh, Milad Gholami, Fariba Rostamnezhad

中国化学快报 . 2014, (09): 1287 -1290 . DOI: 10.1016/j.cclet.2014.04.008