Tetrahedron Letters p. 3517 - 3520 (1998)
Update date:2022-07-31
Topics:
Koseki
Kusano
Nagasaka
A general method for the base-catalized intramolecular cyclization of β-alkynylpropanamides 1 to γ-alkylidene-γ-butyrolactames 2 (and 3) was established. Reactions of β-alkynylamides 1c-h, possessing alkyl groups at the terminal acetylenes, in the presence of a catalytic amount of LiN(TMS)2/AgOTf (= 2:1) in toluene gave exclusively (Z)-alkylidenelactames 2c-h in good yields.
View Morewebsite:http://www.win-winchemical.com
Contact:0086-577-64498589
Address:6F, No. 396 Xingping Road, Longwan Industrial Zone, Wenzhou City, Zhejiang, 325000 P.R.China
website:https://www.yurisolar.com/en
Contact:86--18092602675
Address:No. 560, East Hangtian Road, Xi'an, China
Contact:86-791-86629460
Address:1-6F, 118 Xinzhou road, Nanchang, Jiangxi, China
Shanghai Haoyuan Chemexpress Co., Ltd.
website:https://www.chemexpress.com/
Contact:86-21-58950125
Address:No.3 Building, No.1999, Zhangheng Road, ZhangjiangHighTech Park, Shanghai, P.R.China,201203
Jinan Jiaquan Chemical Co.,Ltd
Contact:+86-531-62318366
Address:Room 502 of Yidonghuayuan No.601 Huaxin Road Licheng District Jinan China
Doi:10.1246/cl.2011.378
(2011)Doi:10.1016/j.tet.2007.06.019
(2007)Doi:10.1021/jo00391a014
(1987)Doi:10.1021/ic801557c
(2008)Doi:10.1134/S1070363207120134
(2007)Doi:10.1039/d0gc03572f
(2021)
