1002727-88-9

基本信息
苯并二氫吡喃-6-硼酸頻那醇酯
3,4-二氫苯并吡喃-6-硼酸酯
6-苯并二氫吡喃基-2-硼酸頻哪醇酯
6-(4,4,5,5-四甲基-1,3,2-二噁硼烷-2-基)苯并二氫吡喃
Chroman-6-boronic acid, pinacol ester
CHROMAN-6-YLBORONIC ACID PINACOL ESTER
Chroman-6-boronic acid, pinacol ester 99%
2-(ChroMan-6-yl)-4,4,5,5-tetraMethyl-1,3,2-dioxaborolane
6-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)chroman, 97%
2-(3,4-dihydro-2h-chromen-6-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
2H-1-Benzopyran, 3,4-dihydro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-
3,4-Dihydro-2H-chromene-6-boronic acid, pinacol ester, 3,4-Dihydro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-chromene
物理化學(xué)性質(zhì)
安全數(shù)據(jù)
常見問(wèn)題列表

67856-45-5

73183-34-3

1002727-88-9
步驟3:將6-碘苯并二氫吡喃(1.0 g,3.85 mmol)、聯(lián)硼酸頻那醇酯(1.22 g,4.81 mmol)和乙酸鉀(1.10 g,11.5 mmol)溶于DMF(36 mL)中,溶液經(jīng)氬氣脫氣5分鐘。隨后,加入PdCl2(dppf)-DCM復(fù)合物(314 mg,0.38 mmol),反應(yīng)混合物再次脫氣5分鐘。將反應(yīng)體系加熱至95℃,持續(xù)攪拌5小時(shí)。反應(yīng)完成后,冷卻至室溫。粗反應(yīng)混合物用水稀釋,用乙酸乙酯(3×100 mL)萃取三次。合并有機(jī)相,依次用水(100 mL)和鹽水(100 mL)洗滌。有機(jī)層經(jīng)無(wú)水硫酸鎂干燥,過(guò)濾后濃縮。粗產(chǎn)物通過(guò)CombiFlash系統(tǒng)進(jìn)一步純化,采用乙酸乙酯/己烷梯度洗脫,得到目標(biāo)產(chǎn)物3,4-二氫苯并吡喃-6-硼酸酯(840 mg,收率84%)。
參考文獻(xiàn):
[1] Patent: WO2009/62285, 2009, A1. Location in patent: Page/Page column 66-67
[2] Patent: WO2009/62308, 2009, A1. Location in patent: Page/Page column 76
[3] Patent: WO2009/62288, 2009, A1. Location in patent: Page/Page column 72-73