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!

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: