2,3-Dihydrobenzo[b][1,4]dioxine-5-carboxylic acid, cas is 4442-53-9, it is a common heterocyclic compound, the benzodioxans compound, its synthesis route is as follows.,4442-53-9
Example 45 Preparation of intermediate N- [l- (benzyl)-4-piperidinyl] methyl]-1, 4- benzodioxane-5-carboxamide A suspension of 1, 4-benzodioxan-5-carboxylic acid (1.80 g, 10.0 mmol) and 1,1′- carbonyldiimidazole (1.78 g, 11.0 mmol) in CH3CN (100 ml) was stirred at room temperature for 2 h. 1-Benzyl-4-aminomethylpiperidine (from example 37) (2.04 g, 10.0 mmol) in CH3CN (10 ml) was added to the mixture and stirred overnight at room temperature. The reaction mixture was concentrated in vacuo, added EtOAc (200 ml) and washed with H2O (3 x 50 ml). The organic layer was dried over Na2SO4 and evaporated in vacuo to a solid material. The residue was separated with flash chromatography (Si02, EtOAc: MeOH, 1: 1) to leave the product as a white solid (2.31 g, 63.1 percent). 1H-NMR (200 MHz, CDCl3) : b 7.74 (dd, 1 H), 7.67 (t, 1 H), 7.34-7. 15 (m, 5 H), 7.03-6. 89 (m, 2 H), 4.43-4. 39 (m, 2 H), 4.33-4. 29 (m, 2 H), 3.52 (s, 2 H), 3.37 (t, 2 H), 2.93 (d, 2 H), 2.06-1. 93 (m, 2 H), 1.77-1. 50 (m, 3 H), 1.47-1. 28 (m, 2 H)
With the rapid development of chemical substances, we look forward to future research findings about 2,3-Dihydrobenzo[b][1,4]dioxine-5-carboxylic acid
Reference£º
Patent; BIO-MEDISINSK INNOVASJON AS; WO2005/61483; (2005); A2;,
Benzodioxan
1,4-Benzodioxane | C8H8O2 – PubChem