N-Fluoro-3-ethyl-3-methyl-1,1-dioxo-2,3-dihydro-1H-1λ6-benzo[e]1,2-thiazin-4-one, a new and efficient agent for electrophilic fluorination of carbanions
摘要:
N-Fluoro-3-ethyl-3-methyl-1,1-dioxo-2,3-dihydro-1H-1 lambda(6)-benzo[e]1,2-thiazin-4-one (1) was prepared in good yield by fluorination of the corresponding sultam (3) with FClO3. The sultam (3) was prepared from saccharin (2) in 3 steps. The N-fluorosultam (1), a very stable crystalline solid, was found to fluorinate carbanions readily in good to excellent yields. (C) 1999 Elsevier Science S.A. All rights reserved.
ABRAMOVITCH R. A.; MORE K. M.; SHINKAI I.; SRINIVASAN P. C., J. CHEM. SOC. CHEM. COMMUNS <CCOM-A8>, 1976, NO 19, 771-772
作者:ABRAMOVITCH R. A.、 MORE K. M.、 SHINKAI I.、 SRINIVASAN P. C.
DOI:——
日期:——
Ring-expansion of 3-bromoalkyl-1,2-benzisothiazole 1,1-dioxides to (2H)-1,2-benzothiazin-4(3H)-one 1,1-dioxides
作者:Rudolph A. Abramovitch、Kundalika M. More、Ichiro Shinkai、Panayencheri C. Srinivasan
DOI:10.1039/c39760000771
日期:——
A simple three-step synthesis of (2H)-1,2-benzothiazin-4(3H)-one 1,1-dioxides from saccharin has been achieved by the base-mediated ring-expansion of 3-(α-bromoalkyl)-1,2-benzisothiazole 1,1-dioxides.
N-Fluoro-3-ethyl-3-methyl-1,1-dioxo-2,3-dihydro-1H-1λ6-benzo[e]1,2-thiazin-4-one, a new and efficient agent for electrophilic fluorination of carbanions
作者:Yoshio Takeuchi、Zhaopeng Liu、Emiko Suzuki、Norio Shibata、Kenneth L Kirk
DOI:10.1016/s0022-1139(99)00028-7
日期:1999.7
N-Fluoro-3-ethyl-3-methyl-1,1-dioxo-2,3-dihydro-1H-1 lambda(6)-benzo[e]1,2-thiazin-4-one (1) was prepared in good yield by fluorination of the corresponding sultam (3) with FClO3. The sultam (3) was prepared from saccharin (2) in 3 steps. The N-fluorosultam (1), a very stable crystalline solid, was found to fluorinate carbanions readily in good to excellent yields. (C) 1999 Elsevier Science S.A. All rights reserved.