公开(公告)号：GB2347409A

公开(公告)日：2000-09-06

申请号：GB9904706

申请日：1999-03-03

Applicant: SECR DEFENCE

Inventor： MILLAR ROSS WOOD ,  CLARIDGE ROBERT PETER ,  PHILBIN SIMON PATRICK

IPC: C07B43/02 ,  C07C201/02 ,  C07C203/04 ,  C07D295/28 ,  C01B21/20 ,  C07D305/06

Abstract: A solid nitrating reagent comprises either a montmorillonite clay or a zeolite material incorporating an amount, preferably 10-30 wt 90, of gaseous dinitrogen pentoxide. The clay material can be type K10 and suitable zeolites include those designated ZSM-5, zeolite beta, zeolite F720 and zeolite F780 (all H form). The reagent is conveniently prepared by exposing a sample of the montmorillonite clay or zeolite material to gaseous dinitrogen pentoxide contained in a stream of ozonised oxygen at a sub-ambient temperature while agitating the clay or zeolite material. The temperature is in the range of -60 to -20{C. In use the reagent is contacted with a substance to be nitrated in an inert solvent such as hexane or a perfluorocarbon at a temperature of -20 to 15{C. Suitable substances to be nitrated include alcohols O-silyl ethers and silylamines.