天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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 BOC-SER(ME)-OH
51293-47-1

BOC-SER(ME)-OH synthesis

7synthesis methods
-

Yield:51293-47-1 240.3 kg

Reaction Conditions:

with sodium hydroxide at 10; for 44 h;Large scale;

Steps:

2 Example 2 Synthesis of (S)-2-((tert-butoxycarbonyl)amino)-3-methoxypropanoic acid
Example 2 Synthesis of (S)-2-((tert-butoxycarbonyl)amino)-3-methoxypropanoic acid (0033) (0034) 45% 4 NaOH (746.3 kg; 8.40 kmoles) and DMS (1053.8 kg; 8.36 kmoles) were added to the reaction mixture below 10° C. over 38 h and for an additional 6 h to complete the reaction. 20% 9 NH4OH (20.0 kg) was added to quench the reaction in the reaction mixture. The pH value was adjusted by 10 citric acid monohydrate (55.8 kg) and 32% 11 HCl (180 kg) to around 3. The 12 product was extracted by toluene (1165 L) twice, and the organic layer was washed by 1% NaOH (40 L) and H2O (39 L×2). The organic layer was concentrated, and stripped by IPA as oil residue (240.3 kg)

References:

SCI Pharmtech, Inc.;Chen, Bo-Fong;Su, Yen-Chi;Li, Yen-Wei;Li, Feng-Hsu;Huang, Chen-Wei US9718765, 2017, B1 Location in patent:Page/Page column 5; 6

BOC-SER(ME)-OH Related Search: