β-Trifluoromethyl-α-functionalized-vinyl sulfides as a potential synthetic intermediate

被引:14
|
作者
Hanamoto, Takeshi [1 ]
Anno, Ryoko [1 ]
Yamada, Kenji [1 ]
Ryu, Kousuke [1 ]
Maeda, Ryoko [1 ]
Aoi, Kazuya [1 ]
Furuno, Hiroshi [2 ]
机构
[1] Saga Univ, Dept Chem & Appl Chem, Saga 8408502, Japan
[2] Kyushu Univ, IMCE, Higashi Ku, Fukuoka 8128581, Japan
关键词
Trifluoromethyl group; Vinyl sulfide; Functionalization; CF(4)-Building block; USEFUL BUILDING BLOCK; DIELS-ALDER REACTION; DITHIONITE INITIATED ADDITION; ORGANIC-MOLECULES; FLUORIDE-ION; HETEROCYCLIC-COMPOUNDS; REAGENTS; 1-PHENYLSULFONYL-3,3,3-TRIFLUOROPROPENE; DERIVATIVES; 1,3-DIENES;
D O I
10.1016/j.tet.2009.01.097
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The beta-(trifluoromethyl)vinyl sulfides on treatment with n-BuLi/TMEDA at -78 degrees C were readily lithiated at an a-position of the Sulfanyl group, and the generated (beta-trifluoromethyl-alpha-sulfanylvinyl anions were reacted with a variety of electrophiles to give the corresponding beta-trifluoromethyl-alpha-functionalized-vinyl sulfides 4aa-4aq in good to excellent yields. The reactivity of some products has been examined. The palladium-catalysed cross-coupling reaction as well as homo-coupling reaction of Oaf provided the corresponding products in good yields, respectively. The Diels-Alder reaction of cyclic dienes and 14 derived from 4ao provided the desired six-membered cyclic products with high endo-trifluoromethyl group selectivity. (C) 2009 Elsevier Ltd. All rights reserved.
引用
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页码:2757 / 2765
页数:9
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