Some tips on 23462-75-1

23462-75-1, 23462-75-1 Dihydro-2H-pyran-3(4H)-one 90109, aTetrahydropyrans compound, is more and more widely used in various fields.

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.23462-75-1,Dihydro-2H-pyran-3(4H)-one,as a common compound, the synthetic route is as follows.

[01 77j Synthesis of ethyl 6,7-dihydro-5H-thieno [3 ,2-b]pyran-2-carboxylatewas similar to that of ethyl 6,7-dihydro-4H-thieno[3,2-c]pyran-2-carboxylate in Example 3, except dihydro-2H- pyran-3(4H)-one was substituted for dihydro-2H-pyran-4(3H)-one. The residue was purified by column chromatography (silica, petroleum ether/EtOAc = 8:1) to give product ethyl 6,7-dihydro- 5H-thieno[3,2-b]pyran-2-carboxylate (319 mg, yield: 30%) as a white liquid. ESI-MS (M+H):213.1. ?H NMR (400 MHz, CDC13) (5: 7.26 (s, 1H), 4.31 (q, J = 7.2 Hz, 2H), 4.17 (t, J = 5.2 Hz, 2H), 2.79 (t, J = 6.8 Hz, 2H), 2.08-2.02 (m, 2 H), 1.35 (t, J = 6.8 Hz, 3H).

23462-75-1, 23462-75-1 Dihydro-2H-pyran-3(4H)-one 90109, aTetrahydropyrans compound, is more and more widely used in various fields.

Reference£º
Patent; BIOGEN IDEC MA INC.; SUNESIS PHARMACEUTICALS, INC.; HOPKINS, Brian, T.; MA, Bin; CHAN, Timothy, Raymond; SUN, Lihong; ZHANG, Lei; KUMARAVEL, Gnanasambandam; LYSSIKATOS, Joseph, P.; KOCH, Kevin; MIAO, Hua; WO2015/89337; (2015); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics