1197-66-6, 2,2,6,6-Tetramethyl-2H-3,5,6-trihydropyran-4-one is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
Zinc powder (520mg, 8mmol) was added 20mL of tetrahydrofuran, was added titanium tetrachloride (0.44mL, 4mmol), the reaction was refluxed for 2 hours, cooled to 0 deg.] C, was added lithium tetrahydroaluminate (76mg, 2mmol), with stirring under ice 10 minutes, triethylamine (0.28 mL, 2 mmol) was added and the reaction was refluxed for 1 hour. Prefabricated 5 mL(4-bromophenyl) (1- (tetrahydro-2H-pyran-2-yl) -1H-indazol-5-yl) methanone1c (193mg, 0.5mmol) and 2,2,6,6-tetramethyl-dihydro -2H- pyran -4 (3H) – tetrahydrofuran-one (200mg, 1.28mmol), the reaction was refluxed for 1 hour. After completion of the reaction, the reaction was quenched with 10mL water and extracted with ethyl acetate (10mL ¡Á 3), the organic phase was concentrated under reduced pressure, purified by silica gel column chromatography with eluent systems resulting residue was purified B to give the title product5 – ((4-bromophenyl) (2,2,6,6-tetramethyldihydro-2H-pyran-4 (3H) -ylidene) methyl) -1- (tetrahydro-2H-pyran-2-yl) -1H-indazole10a (190 mg, white solid) in 74.5% yield.
1197-66-6, The synthetic route of 1197-66-6 has been constantly updated, and we look forward to future research findings.
Reference£º
Patent; Yang, Fanglong; Wang, Chunfei; Wang, Yang; He, Mingxun; Hu, Qiyue; He, Feng; Jiangsu Hengrui Pharmaceutical Co., Ltd.; Shanghai Hengrui Pharmaceutical Co., Ltd.; (53 pag.)CN106518768; (2017); A;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics