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 4,5-DICHLOROPHTHALIC ANHYDRIDE
942-06-3

4,5-DICHLOROPHTHALIC ANHYDRIDE synthesis

4synthesis methods
-

Yield:942-06-3 100%

Reaction Conditions:

with acetyl chloride for 2 h;Reflux;

Steps:

5.1.19 5,6-Dichlorophthalic anhydride (40)
Diacid 39 (10.00 g, 42.55 mmol) was suspended in AcCl (50 mL) and the mixture was heated at reflux with stirring for 2 h.
The obtained suspension was concentrated in vacuo and azeotroped with hexanes (2 * 10 mL) and PhMe (2 * 10 mL) to provide anhydride 40 (9.23 g, 100%) as a beige powder, Rf (SiO2, CHCl3) 0.64: mp 185-189 °C. 1H NMR (500 MHz, CDCl3) δ 8.10 (s, 2H); CIMS m/z (rel intensity) 217/219/221 (MH+, 100/69/12).

References:

Beck, Daniel E.;Lv, Wei;Abdelmalak, Monica;Plescia, Caroline B.;Agama, Keli;Marchand, Christophe;Pommier, Yves;Cushman, Mark [Bioorganic and Medicinal Chemistry,2016,vol. 24,# 7,p. 1469 - 1479]

FullText

4,5-DICHLOROPHTHALIC ANHYDRIDE Related Search: