Synthesis of 7H-benzo[e]naphtho[1,8-bc]silines by rhodium-catalyzed [2 + 2 + 2] cycloaddition
An efficient synthesis of 7H-benzo[e]naphtho[1,8-bc]silines has been developed by a rhodium-catalyzed [2 + 2 + 2] cycloaddition of alkynyl(8-alkynyl-1-naphthyl)silanes with internal alkynes. High chemoselectivity can be realized by employing P(2-MeOC6H4)3 as the ligand for rhodium. Preliminary investigation of its asymmetric variant has also been described to create a silicon stereogenic center with relatively high enantioselectivity.
Synthesis of terminal allenes through copper-mediated cross-coupling of ethyne with N-tosylhydrazones or α-diazoesters
Ethyne is employed as coupling partner in coppermediated cross-coupling reactions with N-tosylhydrazones and α-diazoacetate, leading to the development of a new synthetic method for terminal allenes. With this novel coupling method, the terminal allenes w
Ye, Fei,Wang, Chengpeng,Ma, Xiaoshen,Hossain, Mohammad Lokman,Xia, Ying,Zhang, Yan,Wang, Jianbo
p. 647 - 652
(2016/09/12)
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