Improved Yields with Added Copper(I) Salts in Carbonylative Stille Couplings of Sterically Hindered Vinylstannanes
摘要:
Stille coupling under standard carbonylative conditions proceeds in poor yield when using hindered alkenylstannane and enol triflate partners. The inclusion of 35 mol % CuI or CuBr significantly improves the efficiency of the coupling, providing a variety of complex 1,4-dien-3-ones in good to excellent yield.
Regioselective addition of trimethylstannylcopper–dimethyl sulphide to 1-alkynes: synthesis of ω-substituted 2-(trimethylstannyl)-1-alkenes
作者:Edward Piers、J. Michael Chong
DOI:10.1039/c39830000934
日期:——
Treatment of ω-substituted1-alkynes (2) with 2 equiv. of trimethylstannylcopper–dimethylsulphide (1) in tetrahydrofuran (–63 ° C)in the presence of 60 equiv. of methanol affords good to excellent yields of the corresponding 2-(trimethylstannyl)-1-alkenes (3).
Piers, Edward; Chong, J. Michael, Canadian Journal of Chemistry, 1988, vol. 66, p. 1425 - 1429
作者:Piers, Edward、Chong, J. Michael
DOI:——
日期:——
Novel Synthesis of Functionalized Cyclobutane Derivatives via Intramolecular Conjugate Addition of Alkenyltrimethylstannane Functions to α,β-Alkynic Esters Mediated by Copper(I) Chloride
作者:Edward Piers、Eva M. Boehringer、James G. K. Yee
DOI:10.1021/jo981803w
日期:1998.11.1
PIERS, E.;CHONG, J. M., J. CHEM. SOC. CHEM. COMMUN., 1983, N 17, 934-935
作者:PIERS, E.、CHONG, J. M.
DOI:——
日期:——
PIERS, EDWARD;CHONG, J. MICHAEL, CAN. J. CHEM., 66,(1988) N 6, C. 1425-1429