Copper-catalyzed enantioselective additions to oxocarbenium ions: alkynylation of isochroman acetals.
Copper-catalyzed enantioselective additions to oxocarbenium ions: alkynylation of isochroman acetals.
复制标题
DOI:
10.1021/ja207585p
复制
发表时间:
2011-11-02
影响因子:
15
通讯作者:
Watson, Mary P.
中科院分区:
文献类型:
--
作者:
Maity, Prantik;Srinivas, Harathi D.;Watson, Mary P.
We have developed an enantioselective, copper(I)-catalyzed addition of terminal alkynes to racemic isochroman acetals. This method is one of the first transition metal-catalyzed approaches to enantioselective additions to prochiral oxocarbenium ions. In this reaction, TMSOTf is used to form the oxocarbenium ion in situ under conditions compatible with simultaneous formation of the chiral copper acetylide. By using a bis(oxazoline) ligand, good yields and enantioselectivities are observed for a variety of enantioenriched 1-alkynyl isochromans.
登录
查看更多内容
影响因子:
5.2
作者:
Asano, Yohsuke;Hara, Kenji;Sawamura, Masaya
通讯作者:
Sawamura, Masaya
影响因子:
15
作者:
Anand, NK;Carreira, EM
通讯作者:
Carreira, EM
影响因子:
3.6
作者:
HUFFMAN, MA;YASUDA, N;GRABOWSKI, EJJ
通讯作者:
GRABOWSKI, EJJ
影响因子:
5.2
作者:
Boyall, D;Frantz, DE;Carreira, EM
通讯作者:
Carreira, EM
影响因子:
5.4
作者:
Kobayashi, Shu;Arai, Kenzo;Yamashita, Yasuhiro
通讯作者:
Yamashita, Yasuhiro