成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

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 METHYL (S)-2-(TERT-BUTOXYCARBONYLAMINO)-3-(4-IODOPHENYL)PROPANOATE
113850-76-3

METHYL (S)-2-(TERT-BUTOXYCARBONYLAMINO)-3-(4-IODOPHENYL)PROPANOATE synthesis

6synthesis methods
-

Yield:113850-76-3 92%

Reaction Conditions:

with phosphorous triiodide in acetonitrile at 0 - 10;Temperature;Solvent;

Steps:

5; 6 Example 5

Add compound III (150 g, 0.5 mol), 1000 mL of acetonitrile to the reaction flask, stir to dissolve, then add 120 mL of PI3 dropwise, control the temperature to be less than 0°C, after the dropwise addition, keep the reaction at 10°C, and monitor the reaction by TLC. After the reaction is over, add 1000 mL of saturated sodium bicarbonate solution, stir, stand for liquid separation, wash the organic layer once with 500 mL of water, dry with anhydrous sodium sulfate, filter, concentrate under reduced pressure, add petroleum ether to make a slurry, filter, and dry to obtain compound II (186.41g, 0.46mol), the yield is 92%, and the purity is 99.4%.

References:

CN112661671,2021,A Location in patent:Paragraph 0043-0044; 0046-0047

METHYL (S)-2-(TERT-BUTOXYCARBONYLAMINO)-3-(4-IODOPHENYL)PROPANOATE Related Search: