一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 2,4,6-TRIETHOXYBENZALDEHYDE
59652-88-9

2,4,6-TRIETHOXYBENZALDEHYDE synthesis

2synthesis methods
-

Yield:59652-88-9 34%

Reaction Conditions:

with sodium hydride in N,N-dimethyl-formamide;mineral oil at 20 - 60;

Steps:



96 was synthesized in one step. The trihydroxide (1.88 g, 9.9 mmol) was dissolved in DMF. NaH (0.960 g, 0.024 mol, in 60% dispersion in mineral oil) was added, followed by EtBr (16.240 g, 11.05 mL, 0.149 mol). The mixture was stirred over night at room temperature. After no trialkylated product was observed, another batch of NaH (0.301 g, 0.0125 mol, in 60% dispersion in mineral oil) was added, together with more EtBr (2.05 g, 1.397 mL, 0.0188 mol). The mixture was stirred over night at 60°C and quenched with ?0 (50 mL). The crude product was extracted with DCM, and the organic phase was washed twice with saturated brine. Subsequently, the solvent was removed and the residual crude product was purified with column chromatography (Si02, 3:2 mixture of Hexane/EtOAc) to afford the clean product as a colorless solid. Yield: 0.970 g, 3.4 mmol, 34%, Rf = 0.21 NMR (CDCI3, 400 MHz): 10.34 (s, 1H, CO-H), 5.99 (s, 2H, aryl-H), 4.03 (q, 6H, CH2), 1.39 (m, 9H, CH3)l3C NMR (CDC13, 75 MHz): 187.9, 165.5, 163.5, 109.1. 91.6, 64.6, 63.9, 14.65HR-ESI-MS: m/z calcd for Ci3H1909: 239.1283. found: 239.1286 M+H+ Elemental Analysis: N: 0.07, C: 65.37, H: 7.48 (calcd. C: 65.53, H: 7.61)

References:

WO2011/100829,2011,A1 Location in patent:Page/Page column 105

2,4,6-TRIETHOXYBENZALDEHYDE Related Search:

麻阳| 崇义县| 丰城市| 晋宁县| 龙陵县| 三亚市| 玛纳斯县| 屏边| 沁水县| 册亨县| 富阳市| 桂平市| 北辰区| 合山市| 尚志市| 荃湾区| 泰州市| 博罗县| 衡山县| 沅江市| 理塘县| 茂名市| 锡林郭勒盟| 台北县| 延边| 北川| 区。| 略阳县| 凉城县| 塘沽区| 克东县| 什邡市| 准格尔旗| 徐州市| 丰都县| 龙山县| 宁安市| 会东县| 敖汉旗| 色达县| 吉木萨尔县|