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Step A: 5-Bromo-1-oxo-1,3-dihydro-isoindole-2-carboxylic acid tert-butyl ester To a solution of 5-bromo-2,3-dihydro-isoindol-1-one (10.0 g, 47.4 mmol) in THF (100 mL) was added a solution of (Boc)2O (20.6 g, 94.5 mmol), and DMAP (0.57 g, 4.6 mmol). The reaction mixture was stirred at ambient temp overnight. Upon completion, the reaction mixture was concentrated in vacuo, and the residue was purified by flash column chromatography (EA:PE=1:10) to afford the title compound (13 g, 88%).
The result showed that such a combination of chemo- and biocatalysis improved the catalytic yield more than two times compared with that of sole metal catalysis.I hope my blog about 552330-86-6 is helpful to your research.
Reference:
Patent; CELGENE QUANTICEL RESEARCH, INC.; Chen, Young K.; Wallace, Michael Brennan; (110 pag.)US2017/183325; (2017); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem