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 C18E3
4439-32-1

C18E3 synthesis

3synthesis methods
-

Yield:4439-32-1 35%

Reaction Conditions:

with sodium hydride in N,N-dimethyl-formamide at 0; for 2 h;Inert atmosphere;

Steps:

6 The general method of synthesis of P

General procedure: Under argon protection conditions,Add iodoalkane (1 eq.) to a solution of triethylene glycol or triethylene glycol (1 eq.) in DMF (40 mL).The mixture was cooled to 0 ° C,Add sodium hydride (1.5 eq. 60% in mineral oil) and stir for 2 h.Quenched with water and extracted with ethyl acetate (20 mL×2).The ethyl acetate phases were combined and washed with brine.Then dried over anhydrous sodium sulfate and concentrated to give a crude P product.Purified by silica gel column chromatography (ethyl acetate-hexane)The sample was taken immediately for the next reaction.

References:

CN110066269,2019,A Location in patent:Paragraph 0049; 0067-0069

C18E3 Related Search: