Alkylation of vic-bis(phenyltelluro)alkenes 1 with lithium dialkylcuprates takes place regioselectively at the terminal carbon of 1 to provide the corresponding 1-alkyl-2-phenyltelluroalkenes (2) stereoselectively in good yields.
Ogawa A., Tsuboi Y., Obayashi R., Yokoyama K., Ryu I., Sonoda N., J. Org. Chem, 59 (1994) N 7, S 1600-1601
作者:Ogawa A., Tsuboi Y., Obayashi R., Yokoyama K., Ryu I., Sonoda N.
DOI:——
日期:——
Photo-initiated addition of diphenyl ditelluride to acetylenes
Diphenyl ditelluride 2 has been found to add efficiently to various acetylenes 1 upon irradiation with visible light (>400 nm), providing vic-bis(phenyltelluro)alkenes 3 in good yields.