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
010-86108875
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!

35252-49-4

2-(1-Benzyl-1H-pyrrol-2-yl)-4,6-dichloro-1,3,5-triazine synthesis

2synthesis methods
-

Yield:35252-49-4 86%

Reaction Conditions:

in xylene; for 26 h;Heating / reflux;

Steps:

1.a

A mixture of 1-benzylpyrrol (5.0 g, 31.8 mmol) and 2,4,6-trichloro-1,3,5-triazine (6.8 g, 36.9 mmol) is refluxed in xylene (35 mL) for 26 hours. The solvent is evaporated to dryness, the crude product is cooled and methanol (35 mL) is added at room temperature and the mixture left under stirring for 25 min. The solid obtained is filtered, washed with methanol and dried to obtain 2-(1-benzyl-1H-pyrrol-2-yl)-4,6-dichloro-1,3,5-triazine (8.35 g, 21.4 mmol, 86%, m.p.= 150-1510C).1H NMR (300 MHz, CDCl3): δ 5.72 (s, 2H), 6.36 (dd, J= 4.1 Hz, J' = 2.5 Hz, 1H), 7.09 (d, J= 6.7 Hz, 2H), 7.15 (m, 1H), 7.23-7.33 (m, 3H), 7.59 (dd, J= 4,1 Hz, J'= 1.8 Hz, 1H) .

References:

WO2006/128791,2006,A1 Location in patent:Page/Page column 18-19

2-(1-Benzyl-1H-pyrrol-2-yl)-4,6-dichloro-1,3,5-triazine Related Search: