Über neue und über verbesserte Wege zum Aufbau von pharmakologisch wichtigen Aminen II. Über die Synthese von ß-Aryl-äthylaminen aus aromatischen Aldehyden und Carbonsäuren
Über neue und über verbesserte Wege zum Aufbau von pharmakologisch wichtigen Aminen II. Über die Synthese von ß-Aryl-äthylaminen aus aromatischen Aldehyden und Carbonsäuren
to be an efficient catalyst for allylation and cyanation of aldehydes with allyltrimethylsilane and trimethylsilyl cyanide in the presence of aceticanhydride at room temperature to produce homoallylic acetates and α-cyano acetates in excellent yields. A solution of 10 mol % of LiBF4 in acetonitrile provides a convenient reaction medium to carry out allylation and cyanation reactions under very mild
IMPROVED THREE-COMPONENT LEWIS ACID-FREE APPROACH FOR THE SYNTHESIS OF PROTECTED RACEMIC CYANOHYDRINS
作者:G. Kumaraswamy、K. Ankamma
DOI:10.1080/00304940809458105
日期:2008.10
Hahn; Rumpf, Chemische Berichte, 1938, vol. 71, p. 2141,2147
作者:Hahn、Rumpf
DOI:——
日期:——
Combination of the lipase-catalysed resolution with the Mitsunobu esterification in one pot
作者:Eero Vänttinen、Liisa T Kanerva
DOI:10.1016/0957-4166(95)00224-d
日期:1995.7
A chemo-enzymatic method for the preparation of homochiral esters of 14 secondary alcohols with 100% theoretical yields is described in one pot through two steps: the lipase-catalysed kinetic resolution followed by the Mitsunobu esterification of the free alcohol enantiomer in situ in the resolution mixture. Mathematical equations which link the enzymatic and chemical steps were derived, resulting in an enantioconvergent synthetic tool for the preparation of chiral intermediates.
Hahn; Stiehl; Schulz, Chemische Berichte, 1939, vol. 72, p. 1291,1296