The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 1986
Filed:
Sep. 17, 1984
Marc Piteau, Itteville, FR;
Jean-Pierre Senet, La Chapelle la Reine, FR;
Patrick Wolf, Vert le Petit, FR;
Roy A Olofson, State College, PA (US);
Vu A Dang, State College, PA (US);
Societe Nationale des Poudres et Explosifs, Paris, FR;
Abstract
A process for the preparation of fluoroformates of formula: ##STR1## in which R.sup.1 is a substituted or unsubstituted, saturated or unsaturated aliphatic, cycloaliphatic or polycyclic radical, or substituted or unsubstituted araliphatic radical or an aromatic radical, which consists of reacting a carbonate of formula: ##STR2## in which R.sup.1 has the same meaning as hereinabove and R.sup.2 is hydrogen, alkyl of 1-12 carbon atoms, cycloalkyl of 5-12 carbon atoms, saturated or unsaturated, unsubstituted or substituted by one or more halogen atoms or R.sup.2 is aryl, unsubstituted or substituted by one or more halogen atoms, with an alkali or alkaline earth fluoride, ammonium fluoride or a quaternary ammonium fluoride, of formula FNR.sup.3 R.sup.4 R.sup.5 R.sup.6, wherein R.sup.3, R.sup.4, R.sup.5, R.sup.6 are the same or different and are hydrogen, alkyl or aralkyl of 1-12 carbon atoms or a fluoride which is KHF.sub.2, NH.sub.4 HF.sub.2 or KSO.sub.2 F. The fluoride is activated by a complexing agent for the cation which is a cryptate, a cyclic or linear polyether or by means of a polar aprotic compound. The carbonate is split to give a reaction mixture containing an aldehyde and the fluoroformate which is removed from the reaction mixture.