PROCESSES FOR MAKING PREGABALIN AND INTERMEDIATES THEREFOR
申请人:Thijs Lambertus
公开号:US20090312560A1
公开(公告)日:2009-12-17
Processes for making a diester compound of formula (B) and for converting it to pregabalin, especially via a compound of formula (2), can provide several advantages.
The compound (B) can be converted to the compound (2) via reductive hydrogenation.
作者:VERHE, R.、DE, KIMPE, N.、COURTHEYN, D.、DE, BUYCK, L.、SCHAMP, N.
DOI:——
日期:——
A simple method for the preparation of functionalized trisubstituted alkenes and α,β,γ,δ-unsaturated carbonyl compounds by using natural amino acid l-tryptophan
作者:Ying Hu、Yan-Hong He、Zhi Guan
DOI:10.1016/j.catcom.2010.01.016
日期:2010.3
reactive acetylacetone and ethyl acetoacetate. The reactions were carried out at room temperature and gave good yields. It is a convenient entry for preparation of functionalizedtrisubstituted alkenes and α,β,γ,δ-unsaturated carbonyl compounds.
Acid catalyzed ring closure reactions of electrophilic alkenes
作者:Roland Verhé、Norbert de Kimpe、Dirk Courtheyn、Laurent de Buyck、Niceas Schamp
DOI:10.1016/0040-4020(82)80073-2
日期:1982.1
3-acyl-2-alkyl-4,5-dihydrofurans. Similar cyclization of α-acyl-α,β-unsaturated esters initially afforded 3-alkoxycarbonyl-2-alkyl-4,5-dihydrofurans which were transformed into 2-acylbutanolides on further reaction with sulfuric acid.