470671-32-0Relevant articles and documents
Bulky trialkylsilyl acetylenes in the Cadiot-Chodkiewicz cross-coupling reaction
Marino, Joseph P.,Nguyen, Hanh Nho
, p. 6841 - 6844 (2002)
Bulky trialkylsilyl-protected alkynes such as triethylsilyl (TES), tert-butyldimethylsilyl (TBS), and tri-isopropylsilyl (TIPS) acetylenes underwent the Cadiot-Chodkiewicz cross-coupling reaction with different bromoalkynes to form a variety of synthetically useful unsymmetrical diynes in good yields. The diyne alcohol 10 was transformed regio- and stereoselectively into enynes by hydrotelluration, carbometalation, and reduction reactions.
Nickel-catalyzed oxidative coupling reactions of two different terminal alkynes using O2 as the oxidant at room temperature: Facile syntheses of unsymmetric 1,3-diynes
Yin, Weiyan,He, Chuan,Chen, Mao,Zhang, Heng,Lei, Aiwen
scheme or table, p. 709 - 712 (2009/08/12)
(Formula Presented) Two different terminal alkynes now can be coupled together in the presence of NiCl2-6H2O/Cul by using an excess of one of the terminal alkyne substrates. The new method employed 20 mol % TMEDA as the ligand and environmentally benign O2 or air as the oxidant. It is the first example using Ni-salt as catalyst by employing air or O2 as oxidant, which led to efficient heterocoupling of two different alkynes.