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 N,N'-BIS(2-HYDROXYETHYL)ETHYLENEDIAMINE
4439-20-7

N,N'-BIS(2-HYDROXYETHYL)ETHYLENEDIAMINE synthesis

9synthesis methods
-

Yield:4439-20-7 40.7%

Reaction Conditions:

with sodium carbonate at 135; for 25 h;

Steps:



The syntheses of 1,4,7-trioxa-10,13-diazacyclopentadecane (AA15C5) and 1,4,7,10-tetraoxa-13,16-diazacyclopentadecane (AA18C6) were performed by a modified version of intramolecular cyclization (figure 2) [12]. To a stirred suspension of 2-(2-aminoethylamino)ethanol (208 g, 0.2 M) was added 2-chloroethanol (16.1 g, 0.2 M) and powdered sodium carbonate (16.96 g, 0.16 M). The mixture was stirred at 135 °C for 25 h. After this hadbeen cooled to room temperature, 300 mL of MeOH was added and the mixture was filtered; the resulting solution was evaporated to yield a crude product (yellow oil), which was recrystallized twice from THF over charcoal to give 3 12.05 g (40.7%).

References:

Kira, Jaromir;Niedzialkowski, Pawel;Ossowski, Tadeusz [Journal of Coordination Chemistry,2013,vol. 66,# 1,p. 180 - 190]

N,N'-BIS(2-HYDROXYETHYL)ETHYLENEDIAMINE Related Search: