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 2-butoxyoxane
1927-68-0

2-butoxyoxane synthesis

5synthesis methods
-

Yield:1927-68-0 100%

Reaction Conditions:

with 2Al(3+)*HO(1-)*5CH3O3S(1-) in dichloromethane at 20; for 0.75 h;Reagent/catalyst;

Steps:

Tetrahydropyranylation:

In a 25 mL RB ask, 15 mmol of n-butanol, 16.5 mmol of 3,4-dihydro-2H-pyran (DHP), 1.0 mmol of [Al(H2O)6][MS]3 or 0.5 mmol of Al2(-OH)(MS)5, and 10 mLof dichloromethane were charged. The mixture was stirred at room temperature for 45 min.The catalyst was insoluble in the mixture and can be separated by decantation for reuse.

References:

Wang, Rui;Li, Rongrong;Jiang, Heng;Gong, Hong;Bi, Yanfeng [Journal of Coordination Chemistry,2017,vol. 70,# 8,p. 1327 - 1338]