181135-72-8Relevant articles and documents
Generation of silylethynolates via C-Si bond cleavage of disilylketenes induced by t-BuOK
Ito, Masato,Shirakawa, Eiji,Takaya, Hidemasa
, p. 1329 - 1331 (2007/10/03)
Disilylketenes undergo selective mono-desilylation upon treatment of t-BuOK in the presence of HMPA. The resulting silylethynolates are convertible to other disilylketenes in good yields. The intermediary silylethynolate was analyzed by NMR and IR spectroscopy.
Reaction of ynolate anions derived from silylketenes with electrophiles: a facile preparation of silyl ynol ethers and functionalized silylketenes
Akai, Shuji,Kitagaki, Shinji,Naka, Tadaatsu,Yamamoto, Kiyoshi,Tsuzuki, Yasunori,et al
, p. 1705 - 1710 (2007/10/03)
Reaction of the ynolate anions 2a,b, generated from the silylketenes 1a,b, with a variety of electrophiles 3 is investigated.The reaction with bulky and/or hard silyl chlorides, such as t-BuMe2SiCl, i-Pr3SiCl, (Thexyl)Me2SiCl and t-BuPh2SiCl, exclusively gives the silyl ynol ethers 4, while that with small or soft silyl chlorides and stannyl chlorides gives only the functionalized silylketenes 5 in modest to high yields, respectively.In the case of the reaction with small and hard Me2SiCl, initial formation of the O-trimethylsilyl ynol ether 4b and the subsequent rapid isomerization to the bis-silylketene 5a are proposed by the trapping of 4b as a cobalt complex 7b.
