Catalytic Enantioselective Synthesis of Azepine-Fused Planar-Chiral Ferrocenes by Pt-Catalyzed Cycloisomerization

被引:21
|
作者
Ito, Mamoru [1 ]
Okamura, Moeka [1 ]
Kanyiva, Kyalo Stephen [2 ]
Shihata, Takanori [1 ]
机构
[1] Waseda Univ, Sch Adv Sci & Engn, Dept Chem & Biochem, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan
[2] Waseda Univ, Sch Adv Sci & Engn, Global Ctr Sci & Engn, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan
关键词
C-H ARYLATION; CYCLIC (AMINO)(FERROCENYL)CARBENE; CARBAMAZEPINE;
D O I
10.1021/acs.organomet.9b00422
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Enantioselective synthesis of azepine-fused planarchiral ferrocenes was achieved by the chiral cationic Pt-catalyzed intramolecular cycloisomerization of N-propargyl-2-ferrocenylanilines. A mechanistic study using an N-allenyl analogue indicated that the reaction proceeded selectively in a 7-exo-dig manner along with isomerization of the exo-olefin moiety. A methanesulfonylamino tether was crucial for selective cycloisomerization. This is the first example of the enantioselective synthesis of heteropin-fused planarchiral ferrocenes.
引用
收藏
页码:4029 / 4035
页数:7
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