Condensation Reaction of Methyl N -Phenylcarbamate with Formaldehyde over Hβ Catalyst
✍ Scribed by Li, Fang; Min, Rui; Li, Jing; Gao, Liya; Xue, Wei; Wang, Yanji; Zhao, Xinqiang
- Book ID
- 127216533
- Publisher
- American Chemical Society
- Year
- 2014
- Tongue
- English
- Weight
- 599 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0888-5885
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Several β-ketoesters were dilithiated with an excess of lithium diisopropylamide, followed by condensation with methyl 2-(aminosulfonyl)benzoate to give intermediates that were not isolated but cyclized to 3substituted 1,2-benzisothiazole-1,1-dioxides. In most instances involving the ester-sulfonami