PREPARATION OF ALKENES BY MILD THERMOLYSIS OF SULFOXIDES
申请人:Long Timothy Edward
公开号:US20110230641A1
公开(公告)日:2011-09-22
Embodiments of this disclosure, among others, encompass methods for generating alkenes under mild thermolytic conditions that can provide almost total conversion of a precursor compound to an alkene without isomerization or the need to chromatographically purify the final product By selectively blocking the amino and carboxy groups of the deπvatized amino acid, the methods of the disclosure provide for the synthesis of a peptide having the vinylglycine moiety at either the carboxy or the amino terminus of the peptide The mild conditions for the thermolytic removal of an o-NO
2
-phenyl substituted aryl group ensure that there is minimal if any damage to thermally sensitive conjugates such as a peptide bearing the vinylglycine The methods of the present disclosure have practical applications for the preparation of unsaturated compounds under mild, thermolytic conditions.
[EN] PREPARATION OF ALKENES BY MILD THERMOLYSIS OF SULFOXIDES<br/>[FR] PRÉPARATION D'ALCÈNES PAR THERMOLYSE DOUCE DE SULFOXYDES
申请人:UNIV GEORGIA
公开号:WO2010068371A3
公开(公告)日:2010-10-14
US8580998B2
申请人:——
公开号:US8580998B2
公开(公告)日:2013-11-12
Preparation of vinylglycines by thermolysis of homocysteine sulfoxides
作者:Sravan Kumar Patel、Timothy E. Long
DOI:10.1016/j.tetlet.2009.06.082
日期:2009.9
synthesis and efficacy of preparing Cbz-VG-OMe (1) by thermolysis of alkyl and aryl homocysteine sulfoxides were surveyed. This investigation determined that aryl sulfoxide analogs were more effective for the reaction and that the 2-nitrophenyl analog 10f possessed a unique ability to syn eliminate at temperatures as low as 100 °C. The thermolysis of sulfoxide 10f was additionally discovered to occur