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 N-Methyl-1-(4-nitrophenyl)methanesulfonamide
85952-29-0

N-Methyl-1-(4-nitrophenyl)methanesulfonamide synthesis

5synthesis methods
-

Yield:-

Reaction Conditions:

with methylamine in dichloromethane

Steps:

1.a a
The organic layer was separated, dried over anhydrous sodium sulphate, filtered and evaporated to give 4-nitrobenzyl sulphonyl chloride (48.9 g, 83%) which was pure by 1 H NMR. Methylamine gas was bubbled through a solution of 4-nitrobenzyl sulphonyl chloride (37.9 g, 0.16 mol), in dichloromethane (325 ml), until uptake had ceased (0.5 h). The resulting solid was filtered, washed with H2 and dried under vacuum to give the title-sulphonamide (32.5 g, 88%), δ(250MHz, D6 -DMSO) 2.61 (3H, s, Me), 4.55 (2H, s, CH2), 7.06 (1H, s, NH), 7.66 (2H, d, J=8.7Hz, Ar-H), 8.25 (2H, d, J=8.7Hz, Ar-H).

References:

Merck Sharp & Dohme Ltd. US5854247, 1998, A

N-Methyl-1-(4-nitrophenyl)methanesulfonamide Related Search: