1515-72-6Relevant articles and documents
N-Alkylphthalimides: Structural requirement of thalidomidal action on 12-O-tetradecanoylphorbol-13-acetate-induced tumor necrosis factor α production by human leukemia HL-60 cells
Shibata,Shichita,Sasaki,Nishimura,Hashimoto,Iwasaki
, p. 177 - 179 (1995)
Phthalimide analogs N-substituted with n-butyl, tert-butyl, hexyl and adamantyl groups were designed and prepared as simplified analogs of thalidomide and methylthalidomide. All the compounds prepared except N-n-butylphthalimide showed thalidomidal activity on 12-O-tetradecanoylphorbol-13-acetate-induced tumor necrosis factor (TNF)-α production by human leukemia HL-60 cells. Among the investigated compounds, including thalidomide and methylthalidomide, N-adamantylphthalimide showed the most potent TNF-α production-enhancing activity.
Copper-catalyzed oxidation of arene-fused cyclic amines to cyclic imides
Yan, Xiaoyu,Fang, Kun,Liu, Hailan,Xi, Chanjuan
, p. 10650 - 10652 (2013)
A novel copper-catalyzed oxidation of arene-fused cyclic amines to the corresponding cyclic imides has been developed. The reaction can be used to synthesize 1,3-disubstituted TPD in high yields.
Carbonylative cyclization of o-halobenzoic acids for synthesis of N-substituted phthalimides using polymer-supported palladium-N-heterocyclic carbene as an efficient, heterogeneous, and reusable catalyst
Khedkar, Mayur V.,Khan, Shoeb R.,Dhake, Kishor P.,Bhanage, Bhalchandra M.
, p. 2623 - 2629 (2012)
The carbonylative cyclization of o-iodobenzoic acid with a variety of primary amines and carbon monoxide (1 bar) using a polymer-supported palladium-N-heterocyclic carbene complex (PS-Pd-NHC) as the catalyst gives N-substituted 1H-isoindole-1,3(2H)-diones (phthalimides) in good to excellent yields with a short reaction time. The catalyst is efficient, heterogeneous, and phosphine-free, it exhibited remarkable activity and it is also recyclable (4 consecutive cycles). The use of methyl o-iodobenzoate as the substrate under these conditions also gave N-substituted 1H-isoindole-1,3(2H)-diones, but with lower yields. Cyclization of o-iodobenzyl alcohol with carbon monoxide under these conditions gave isobenzofuran-1(3H)-one (phthalide). Georg Thieme Verlag Stuttgart · New York.
Electroselective and Controlled Reduction of Cyclic Imides to Hydroxylactams and Lactams
Bai, Ya,Shi, Lingling,Zheng, Lianyou,Ning, Shulin,Che, Xin,Zhang, Zhuoqi,Xiang, Jinbao
supporting information, p. 2298 - 2302 (2021/04/05)
An efficient and practical electrochemical method for selective reduction of cyclic imides has been developed using a simple undivided cell with carbon electrodes at room temperature. The reaction provides a useful strategy for the rapid synthesis of hydroxylactams and lactams in a controllable manner, which is tuned by electric current and reaction time, and exhibits broad substrate scope and high functional group tolerance even to reduction-sensitive moieties. Initial mechanistic studies suggest that the approach heavily relies on the utilization of amines (e.g., i-Pr2NH), which are able to generate α-aminoalkyl radicals. This protocol provides an efficient route for the cleavage of C-O bonds under mild conditions with high chemoselectivity.
Preparation method of N - alkyl -4 -nitrophthalimide
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Paragraph 0049-0050, (2021/10/27)
The invention discloses a preparation method of N - alkyl -4 -nitrophthalimide, which comprises the following steps of 1) mixing phthalic anhydride, alkyl aldehyde and inorganic amine, reacting under the action of hydrogen, cooling and crystallizing, and drying to obtain N -alkyl phthalimide. Step 2) The 1 alkylphthalimide obtained in step N -) is subjected to nitration reaction, and the product is purified and dried to obtain the N -alkyl -4 -nitrophthalimide. The alkyl aldehyde in step 1) is preferably an alkyl aldehyde of carbon 1 - 4. The preparation method has the advantages of wide raw material source, low price, simple process, easiness in large-scale production and the like. Through one-step synthesis, the reaction efficiency is high, the device is simple and easy to operate, and green and environment-friendly.
