Synthetic Route of 334952-09-9, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 334952-09-9, name is 2-Oxoindoline-6-carboxylic acid belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below.
A solution of 2-oxoindoline-6-carboxylic acid (1.2 g, 6.77 mmol, 1.00 equiv), sulfuric acid (98%, catalytic amount) in CD3OD (50 mL) was stirred for 24 hours at 60 C. The reaction mixture was cooled to room temperature and the filtrate was concentrated under vacuum and poured into ice water. The pH was adjusted to 8 with NaHCO3 and the aqueous solution was extracted with ethyl acetate. The ethyl acetate was concentrated and the residue applied onto a silica gel column and eluted with ethyl acetate/petroleum ether (1:5) to give the title product 1.0 g (75%) as a brown solid. 1H NMR (400 MHz, CDCl3) delta: 10.54 (s, 1H), 10.50 (s, 1H), 7.58 (m, 1H), 7.34 (d, J=7.8 Hz, 2H), 3.45 (s, 2H).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 2-Oxoindoline-6-carboxylic acid, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Auspex Pharmaceuticals, Inc.; Rao, Tadimeti; Zhang, Chengzhi; US2015/284327; (2015); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem