The synthetic route of 4175-76-2 has been constantly updated, and we look forward to future research findings.
4175-76-2,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.4175-76-2,2,4-Dichlorothiazole,as a common compound, the synthetic route is as follows.
Example 74 Preparation of 3-(4-Chloro-thiazole-2-yl)pyridine To a suspension of pyridin-3-ylboronic acid (3.87 g, 31.5 mmol) in toluene (120 mL) was added 2,4-dichlorothiazole (4.62 g, 30 mmol) followed by ethanol (60 mL) and a 2.0 M solution of K2CO3 (30.0 mL, 60.0 mmol). The solution was degassed by applying vacuum and then purging with nitrogen (3 times). To the reaction mixture was added tetrakis(triphenylphosphine)palladium (0) (1.733 g, 1.500 mmol) and the flask was heated at 95 C under nitrogen for 16 hours. The aqueous layer was removed and the organic layer was concentrated. The crude product was purified via silica gel chromatography (0-100% ethyl acetate/hexanes) to afford the title compound as a brown solid (4.6 g, 74%): mp 84-86 C; IR (KBr) 3092 cm-1; 1H NMR (400 MHz, CDCl3) delta 9.16 – 9.13 (m, 1H), 8.69 (dd, J = 4.8, 1.6 Hz, 1H), 8.23 (ddd, J = 8.0, 2.2, 1.7 Hz, 1H), 7.40 (ddd, J = 8.0, 4.8, 0.8 Hz, 1H), 7.16 (s, 1H).
The synthetic route of 4175-76-2 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; Dow AgroSciences, LLC; Trullinger, Tony; Hunter, Ricky; Garizi, Negar; Yap, Maurice; Buysse, Ann; Pernich, Dan; Johnson, Timothy; Bryan, Kristy; Deamicis, Carl; Zhang, Yu; Niyaz, Noormohamed; McLeod, CaSandra; Ross, Ronald; Zhu, Yuanming; Johnson, Peter; Eckelbarger, Joseph; Parker, Marshall; EP2604268; (2015); B1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica