“…Thin-layer chromatography (TLC) was performed with Macherey-Nagel Pre-coated TLC plates Sil G25 UV 254 . The group 15 metal reagents, triphenylantimony dibromide (3) [21], triarylantimony diacetates such as 6a [5], 6b [5], 6c [2c], 6d [12], triphenylantimony dibenzoate (7) [2c], triphenylantimony ditosylate (8) [22] and triarylbismuthanes such as 18b [23], 18c [23], 18d [23] were prepared according to the reported procedures, and others were purchased from Tokyo Kasei Kogyo Co., Ltd., Japan.…”