ChemicalBook CAS DataBase List PHENSUXIMIDE

PHENSUXIMIDE synthesis

11synthesis methods

Product Name:PHENSUXIMIDE
CAS Number:86-34-0
Molecular formula:C11H11NO2
Molecular Weight:189.21

Phensuximide, 1-methyl-3-phenylpyrrolidine-2,5-dione (9.3.5) is synthesized by the reaction of phenylsuccinic acid or its anhydride with methylamine [10,11].

930-88-1 Synthesis

930-88-1
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$6.00/1g

98-80-6 Synthesis

98-80-6
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$5.00/5g

86-34-0
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$29.00/5mg

Yield: 92%

Reaction Conditions:

with 4,4'-bipyridine;palladium diacetate;acetic acid in tetrahydrofuran;water at 80; for 24 h;Schlenk technique;Temperature;

Steps:

Typical procedure for conjugate addition of arylboronic acids to N-methylmaleimide:
To a Schlenk tube, phenylboronic acid (244 mg, 2.0 mmol), N-methylmaleimide(111 mg, 1.0 mmol), Pd(OAc)₂ (11.2 mg, 0.050 mmol), bpy (31.2 mg,0.20 mmol), HOAc (1.0 mL), THF (2.0 mL) and H₂O (0.6 mL) were mixed.The mixture was stirred at 80°C in air for 24 hrs until the reaction completedas monitored by TLC. Water (10mL) was added to the reaction, and the mixture was neutralized with NaHCO₃, then extracted with CH₂Cl₂(10 mL×3), dried by Na₂SO₄ and concentrated. The residue was purified by flash chromatography (EtOAc: petroleum ether 1: 3) to give 174 mg product 3aa with 92% yield as acolorless oil. N-Methyl-2-phenylsuccinimide³(3aa) Oil.¹H NMR (400 MHz, CDCl₃): δ 7.46-7.15 (m, 5H), 4.03 (dd, J = 9.2, 4.4 Hz, 1H), 3.21 (dd, J = 18.8, 9.6 Hz, 1H), 3.07 (s, 3H),2.83 (dd, J = 18.8, 4.0 Hz, 1H); ¹³CNMR (400 MHz, CDCl₃): δ 177.76, 176.18, 137.01, 129.08, 127.85,127.30, 45.84, 37.01, 25.10; IR (KBr) 1694 cm^-1; MS (ESI) m/z: 212(M + Na⁺).

References:

Ji, Jiamin;Yang, Zhenyu;Liu, Rui;Ni, Yuxin;Lin, Shaohui;Pan, Qinmin [Tetrahedron Letters,2016,vol. 57,# 25,p. 2723 - 2726] Location in patent:supporting information