Lewis Acid Catalyzed Cascade Reaction of 3-(2-Benzenesulfonamide)propargylic Alcohols to Spiro[indene-benzosultam]s
2015
Sun, Lang | Zhu, Yuanxun | Wang, Jing | Lu, Ping | Wang, Yanguang
A highly efficient and convenient construction of the spiro[indene-benzosultam] skeleton from propargylic alcohols has been developed. The reaction proceeded in a Lewis acid catalyzed cascade process, including the trapping of allene carbocation with sulfonamide, electrophilic cyclization, and intramolecular Friedel–Crafts alkylation. In the presence of NIS or NBS, iodo/bromo-substituted spiro[indene-benzosultam]s could be prepared in excellent yields.
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书目信息
Organic letters
卷
17
期
2
页码
242
- 245
ISSN
1523-7052
出版者
The Royal Society of Chemistry
其它主题
Allene; Alkylation; Lewis acids
语言
英语
类型
Journal Article; Text
2024-02-28
MODS