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 COUMERMYCIN A1
4434-05-3

COUMERMYCIN A1 synthesis

11synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 7 steps
1.1: 88 percent / 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide HCl / CH2Cl2
2.1: 83 percent / Bu3P / CH2Cl2 / 72 h / 20 °C
3.1: 98 percent / trifluoroacetic acid / CH2Cl2; H2O / 20 °C
4.1: 49 percent / diethyl azodicarboxylate; PPh3 / CH2Cl2 / 20 °C
5.1: H2 / Pd/C / tetrahydrofuran; methanol
6.1: aniline; NaNO2; NaOAc / aq. HCl; methanol; tetrahydrofuran
6.2: Na2S2O4; NaOAc / ethanol; H2O; tetrahydrofuran
7.1: 85 percent / HATU; 4-methylmorpholine / dimethylformamide

References:

Olson, Steven H.;Slossberg, Llnon H. [Tetrahedron Letters,2003,vol. 44,# 1,p. 61 - 63]

COUMERMYCIN A1 Related Search:

科技| 渭南市| 无棣县| 宝丰县| 广安市| 德兴市| 昌图县| 札达县| 莱芜市| 仲巴县| 通海县| 鹤峰县| 新安县| 克什克腾旗| 吴川市| 荥阳市| 琼海市| 白玉县| 乐安县| 榆树市| 永新县| 鄂伦春自治旗| 鸡西市| 衡山县| 辽阳市| 朝阳区| 兴隆县| 武穴市| 航空| 清水河县| 丰原市| 巢湖市| 阳原县| 彭泽县| 武义县| 佛山市| 舞钢市| 奉新县| 宜都市| 衡水市| 奇台县|