Palladium-Catalysed Amination of Aryl- and Heteroaryl Halides Using<i>tert</i>-Butyl Tetraisopropylphosphorodiamidite as an Easily Accessible and Air-Stable Ligand
作者:Gheorghe-Doru Roiban、Gerlinde Mehler、Manfred T. Reetz
DOI:10.1002/ejoc.201301789
日期:2014.4
phosphorus compound tert-butyl tetraisopropylphosphorodiamidite, prepared from bis(diisopropylamino)chlorophosphine, is an excellent ligand for palladium-catalysed Buchwald–Hartwig amination of aryl- and heteroaryl chlorides and bromides. Based on its ready accessibility and air-stability, this amination protocol is a practical approach to the synthesis of industrially important aryl- and heteroarylamines.
A new strategy is developed for the synthesis of 1-aminoisoquinoline derivatives. This Rh(III)-catalyzed [4 + 2] annulation reaction employs benzamidines as efficient directing groups and the vinylenecarbonate as an acetylene surrogate. Additionally, the reaction features broad substrate scopes and good yields, only producing carbonate anion as byproduct.
A borrowinghydrogenstrategy for the palladium‐catalyzed dehydrativecoupling of aminoisoquinolines or aminoquinolines with benzylic alcohols by a water‐soluble π‐benzylpalladium(II) system has been developed.
Processes for the preparation of acid derivatives useful as serine protease inhibitors
申请人:——
公开号:US20040077865A1
公开(公告)日:2004-04-22
This invention relates to novel processes for the preparation of amino isoquinolines, benzylamino isoquinolines, and acid derivatives useful as serine protease inhibtors.
Isoquinoline compounds, compositions containing them and their use in the inhibition of gastric acid secretion in mammals. A compound of the invention is 1-[(2-Methoxyphenylmethyl)amino]isoquinoline hydrochloride.