Lithium Hexamethyldisilazide → 3-(3-Methoxy-4-nitro-phenyl)-3-(3,4,5-trimethoxy-phenyl)-acrylonitrile

HRID 971003ノート

反応式

HRID 971003 の反応式
COC1C=CC(C(C2C=CC(OC)=C(OC)C=2)=[CH:10][C:11]#[N:12])=CC=1[N+]([O-])=O.[CH3:26][O:27][C:28]1[CH:29]=[C:30]([C:37]([C:39]2[CH:44]=[C:43]([O:45][CH3:46])[C:42]([O:47][CH3:48])=[C:41]([O:49][CH3:50])[CH:40]=2)=O)[CH:31]=[CH:32][C:33]=1[N+:34]([O-:36])=[O:35].C[Si]([N-][Si](C)(C)C)(C)C.[Li+]>>[CH3:26][O:27][C:28]1[CH:29]=[C:30]([C:37]([C:39]2[CH:44]=[C:43]([O:45][CH3:46])[C:42]([O:47][CH3:48])=[C:41]([O:49][CH3:50])[CH:40]=2)=[CH:10][C:11]#[N:12])[CH:31]=[CH:32][C:33]=1[N+:34]([O-:36])=[O:35]

参加物

4

反応物 3

HCID 2733832Lithium HexamethyldisilazideHCID 69205076(3-Methoxy-4-nitro-phenyl)-(3,4,5-trimethoxy-phenyl)-methanoneHCID 692056143-(4-Methoxy-3-nitro-phenyl)-3-(3,4-dimethoxy-phenyl)-acrylonitrile

生成物 1

HCID 692040173-(3-Methoxy-4-nitro-phenyl)-3-(3,4,5-trimethoxy-phenyl)-acrylonitrile収率 70%

実験手順

3-(3-Methoxy-4-nitro-phenyl)-3-(3,4,5-trimethoxy-phenyl)-acrylonitrile (E and Z isomers) were prepared analogously to 3-(4-methoxy-3-nitro-phenyl)-3-(3,4-dimethoxy-phenyl)-acrylonitrile using (3-methoxy-4-nitro-phenyl)-(3,4,5-trimethoxy-phenyl)-methanone (1.2 g, 3.5 mmol), lithium bis(trimethylsilyl)amide (3.9 ml, 3.9 mmol) and diethyl cyanomethylphosphate (0.7 g, 3.9 mmol). The crude product was purified by flash chromatography (silica gel, CH2Cl2) to afford mixture isomers of 3-(3-methoxy-4-nitro-phenyl)-3-(3,4,5-trimethoxy-phenyl)-acrylonitrile (0.9 g, 70%): 1H NMR (CDCl3) δ 7.93 (dd, J=8.4 and 6 Hz, 1H), 7.06-6.96 (m, 2H), 6.65 (s, 1H), 6.46 (s, 2H), 5.80(5.71) (s, 1H), 4.00-3.81 (m, 12H).

後処理

  1. customThe crude product was purified by flash chromatography (silica gel, CH2Cl2)

出典と根拠

ORDレコード
ord-0224a59bdc1a44d58a6c7b516d563460
出典データセット
uspto-grants-2007_12
特許番号
US07312241B2

反応ノート

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