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:
May. 04, 1976
Filed:
Jul. 16, 1973
Solomon Aronovich Giller, Riga, SU;
Regina Abramovna Zhuk, Riga, SU;
Anna Eduardovna Berzinya, Riga, SU;
Other;
Abstract
A process for producing N.sub.1 -(.alpha.-butyrolactone)- and N.sub.1 -(.alpha.-valerolactone)-5-substituted uracils of the formula: ##SPC1## Wherein R.sub.1 is hydrogen, methyl, a trihalomethyl or a halogen; R.sub.2 is hydrogen or an alkyl, n = 1 or 2, characterized in that a bis(trimethylsilyl)-5-substituted uracil of the formula: ##SPC2## Wherein R.sub.1 is hydrogen, methyl, a trihalomethyl or a halogen, is treated with an .alpha.-bromolactone of the formula: ##SPC3## Wherein R.sub.2 is hydrogen or an alkyl, n = 1 or 2. The reaction is conducted at a temperature ranging from 80.degree. to 160.degree.C. From the reaction mixture thus obtained there is distilled off the resulting trimethylbromosilane formed during the reaction, and the reaction mixture is treated with a lower aliphatic alcohol.