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6-(tert-ButoxycarbonylaMino)-1H-indole-2-carboxylic acid synthesis
- Product Name:6-(tert-ButoxycarbonylaMino)-1H-indole-2-carboxylic acid
- CAS Number:1093261-27-8
- Molecular formula:C14H16N2O4
- Molecular Weight:276.29
![methyl 6-(tert-butoxycarbonylamino)-1H-indole-2-carboxylate](/CAS/20180702/GIF/541522-65-0.gif)
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Yield:1093261-27-8 99%
Reaction Conditions:
with water;lithium hydroxide in tetrahydrofuran;methanol at 20;
Steps:
123.C
Lithium hydroxide (0.095 g, 3.96 mmol) was added to a solution of methyl 6-({[(1 ,1- dimethylethyl)oxy]carbonyl}amino)-1 H-indole-2-carboxylate (0.1 15 g, 0.396 mmol) in a 3:1 :1 mixture of THF:methanol:water (2 ml). The reaction mixture was stirred at RT overnight. The solvent was evaporated. The residue was dissolved in water and acidified with 1 N aqueous HCI. The resulting suspension was extracted with ethyl acetate. The organic layer was separated, dried over sodium sulfate and the solvent was evaporated to give the title compound (0.115 g, >99%) as an off-white solid. 1H NMR (400 MHz, DMSOd6): δ ppm 1 1.18 (s, 1 H), 9.21 (s, 1 H), 7.70 (s, 1 H), 7.37 (d, 1 H), 6.93 (dd, 1 H), 6.74 (s, 1 H), 1.46 (s, 9 H). MS: m/z 275 (M-1 ).
References:
WO2008/154271,2008,A1 Location in patent:Page/Page column 137
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![1H-Indole-1,2-dicarboxylic acid, 6-nitro-, 1-(1,1-dimethylethyl) 2-methyl ester](/CAS/20210305/GIF/1093261-18-7.gif)
1093261-18-7
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