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 ALPHA-HYDROXYHIPPURIC ACID
16555-77-4

ALPHA-HYDROXYHIPPURIC ACID synthesis

5synthesis methods
-

Yield:16555-77-4 100%

Reaction Conditions:

in water;acetone; for 19 h;Heating / reflux;

Steps:

7.7.3

The titled compound 65 was prepared according to a procedure described by Zoller et al.209 A mixture of benzamide 35 (5.00 g, 41.3 mmol) and glyoxylic acid monohydrate 41 (4.32 g, 46.9 mmol) in anhydrous acetone (70 mL) was heated at reflux for 19 h. The reaction mixture was evaporated under reduced pressure to afford the desired product 65 as a colourless solid (8.06 g, 100%), m.p. 198-200° C. (lit.209 200-201° C. (dec)) Spectroscopic data indicated the crude product 65 did not require purification and was used directly in the subsequent reaction (Section 7.11.4). νmax (KBr): 3310bs, 3058w, 1728s, 1646s, 1602w, 1582w, 1535s, 1491w, 1452w, 1315m, 1292w, 1254m, 1161m, 1097s, 1040m, 1002w, 957m, 805w, 770w, 728m, 692m, 654m, 609w, 515m, 483w cm-1. 1H n.m.r. (300 MHz, D6-DMSO): δ 5.60 (d, J=7.8 Hz, 1H, H2), 7.41-7.49 (m, 2H, H3', 5'), 7.55 (m, 1H, H4'), 7.86-7.92 (m, 2H, H2', 6'), 9.26 (d, J=7.8 Hz, 1H, NH), two exchangeable OH protons not observed. 13C n.m.r. (75 MHz, D6-DMSO): δ 71.7 (C2), 127.6, 128.3, 131.7 (Arom CH), 133.7 (C1'), 166.0, 171.5 (C1, CONH). Mass Spectrum (ESI+, MeOH): m/z 218.2 (M+Na)+, C9H9NNaO4 requires 218.2.

References:

US2007/197429,2007,A1 Location in patent:Page/Page column 58

ALPHA-HYDROXYHIPPURIC ACID Related Search:

龙州县| 舞钢市| 综艺| 和林格尔县| 三河市| 大连市| 东阳市| 深州市| 日喀则市| 金川县| 余干县| 岫岩| 娄底市| 汪清县| 赤水市| 涟水县| 曲水县| 磐石市| 云阳县| 招远市| 贡觉县| 军事| 宁化县| 会东县| 墨玉县| 青浦区| 东阿县| 龙里县| 疏附县| 乌鲁木齐县| 平度市| 兖州市| 林周县| 错那县| 富顺县| 江北区| 西乡县| 个旧市| 六盘水市| 陇川县| 昭平县|