Process for the production of high energy materials
申请人:Secretary of State for Defence
公开号:US04985584A1
公开(公告)日:1991-01-15
A process for the production of a high energy nitrate ester involves reacting, in an inert organic solvent, a heterocyclic compound, selected from oxiranes, oxetanes, N-substituted aziridines and N-substituted azetidines, with either N.sub.2 O.sub.4 or N.sub.2 O.sub.5, and when the compound is reacted with N.sub.2 O.sub.4, oxidizing the O- or N-nitrate substituents or substituent in the product to O- or N-nitrate substituent or substituents. The remaining ring carbon atoms on the heterocyclic compound may be substituted or unsubstituted. Preferred substituent groups for the C and/or N ring atoms on the compound include alkyl, cyanoalkyl, haloalkyl, nitroalkyl, and substituted aryl. Several novel nitrate ester are also provided, including nitrated derivatives of polybutadiene, in which between 1% and 25% of the carbon atoms in the polymer are substituted by vicinal nitrate ester (--ONO.sub.2) groups.
Tricyclic pyridine derivatives and pharmaceutical compositions
申请人:Hoffmann-La Roche Inc.
公开号:US04735940A1
公开(公告)日:1988-04-05
Compounds of the formula ##STR1## or a pharmaceutically acceptable acid addition salt of a compound of formula I which has one or more basic substituents, are described. The compounds of formula I possess pronounced muscle relaxant, sedative-hypnotic, anticonvulsive and anxiolytic properties and have low toxicity.
The photochemistry of 1,4-dihtdro-5h-tetrazole derivatives isolated in low-temperature matrices
作者:Ian R. Dunkin、Charles J. Shields、Helmut Quast
DOI:10.1016/0040-4020(89)80053-5
日期:1989.1
same diaziridinone obtained previously from solution photolysis, but it also underwent a novel cleavage to MeNCO and, presumably, methyl azide. Iminotetrazolines () and () gave the corresponding carbodiimides () and (), and iminodiaziridines () and (); while the tetrazolinethiones () and () gave carbodiimides () and (), respectively. Photolysis of the vinyl substituted tetrazolinone () proceeded differently
The compounds of the formula ##STR1## in which R represents the radical of the formula ##STR2## in which R.sub.1 represents lower alkyl and each of R.sub.2 and R.sub.3, independently of the other, represents hydrogen or lower alkyl, and salts thereof exhibit antidiabetic actions.
Process for preparing 2-oxazolidone and its derivatives
申请人:Tokyo Institute of Technology
公开号:US04209628A1
公开(公告)日:1980-06-24
Process for preparing 2-oxazolidone and its derivatives by reacting react carbon dioxide with aziridine compound, preferably, in the presence of Lewis acid as a catalyst.