The effect of diethylamine on Stille alkylations with tetraalkylstannanes
作者:M. Teresa Barros、Christopher D. Maycock、Mariana I. Madureira、M. Rita Ventura
DOI:10.1039/b103072h
日期:——
The addition of diethylamine to Stille alkylation reactions using stannanes improves yields by reducing β-hydride elimination and reduction reactions, it also serves as a substitute for other additives such as Cu(I)I.
Application of directed metallation in synthesis. Part 3: Studies in the synthesis of (±)-semivioxanthin and its analogues
作者:Sukanta Kamila、Chandrani Mukherjee、Sasanka S Mondal、Asish De
DOI:10.1016/s0040-4020(02)01599-5
日期:2003.2
The synthesis of several analogues of (+/-)-semivioxanthin including five thiophene analogues, using directed metalation are reported. The strategy consisted of the synthesis of functionalized naphthalene or benzo[b]thiophene as building blocks followed by annelation of the pyrone. (C) 2003 Elsevier Science Ltd. All rights reserved.
Anomalous Face-Selectivity in Sharpless Asymmetric Dihydroxylation of <i>o</i>-Allylbenzamides
Regioselective ortho-alkylation of N,N-diethylbenzamides via lithiation and copper transmetalation
作者:Dario Pini、Stefano Superchi、Piero Salvadori
DOI:10.1016/0022-328x(93)83206-b
日期:1993.6
One-pot ortho-lithiation and copper transmetalation with CuCN.LiCl of N,N-diethylbenzamides afford the corresponding aryl cyanocuprate, which gives coupling with some aliphatic halides in fair to good yields.
Anionic aromatic ring annelation of o-allyl benzamides. Regiospecific synthesis of naphthols and naphthoquinones