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
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 2,6-Dioxopiperidine-3-ammonium chloride
24666-56-6

2,6-Dioxopiperidine-3-ammonium chloride synthesis

8synthesis methods
-

Yield:24666-56-6 100%

Reaction Conditions:

with hydrogenchloride;hydrogen;5% palladium over charcoal in methanol;water; under 3102.97 Torr; for 4 h;

Steps:

1

A solution of 15 (4.0Og, 0.015 mol) in methanol (200 ml) and 2N HCl (15 ml) was hydrogenated over 5% Pd-C (100 mg) at 60 psi for 4 h. The catalyst was filtered off and the filtrate concentrated to dryness to give the title compound 16 as a white solid (2.61 g, 100%), mp 245 0C (dec) (lit. 235 0C (dec)). 1H NMR (400 MHz, DMSO-D6) δ ppm 11.22 (br s? IH), 8.68 (br s, 3H), 4.20 (dd, J=13.0, 5.3 Hz, IH), 2.77-2.65 (m, IH), 2.64- 2.56 (m, IH), 2.27-2.19 (m, IH)5 2.09-1.97 (m, IH).

References:

WO2008/7979,2008,A1 Location in patent:Page/Page column 13

2,6-Dioxopiperidine-3-ammonium chloride Related Search: