摘要:
Multi-step process for the preparation of compounds via hazardous intermediates comprising the steps of a) preparing in a microreactor a hazardous intermediate and b) optionally performing one or more reaction steps on the hazardous intermediate in one or more additional microreactors and c) further converting the hazardous intermediate with a suitable reaction agent in a subsequent microreactor until a stable end product is formed.
摘要:
提供一种合成( R )-1-(萘-1-基)乙胺(I)的工艺。其特征包括以1-萘乙酮为起始原料,经不对称氢化还原为( S )-1-(萘-1-基)乙醇(II)后,经成( S )-1-(萘-1-基)乙基磺酸酯衍生物(III)、叠氮化(IV)、氢化还原后得到高ee值的( R )-1-(萘-1-基)乙胺(I)。该工艺具有原料易得、成本低廉等的优点。
摘要:
The present invention relates to an improved process for the preparation of Aliskiren and its pharmaceutically acceptable salts comprising reducing the compound of Formula-Z in presence of catalyst and ammonia. The present invention further relates to Aliskiren hemifumarate having diastereomeric impurity less than 0.2%.(F) H3C CH3 NH2 H3C 0 H3C CH3 Formula-Z
摘要:
There is disclosed a process for hydrogen release and chemical storage by dehydrogenating low molecular weight aliphatic amines and di-amines to produce their corresponding nitriles in a reactor system containing a hydrogen fractionation membrane (or sweep gas) to quickly remove any and all hydrogen generated during the dehydrogenation reaction. This disclosure further provides a process for hydrogen recovery using bi- and tri-functional amines that produce corresponding nitriles and high density hydrogen release.
摘要:
The present invention provides novel process for the preparation of renin inhibitor Aliskiren or its derivatives, and its pharmaceutically acceptable salts. The present invention also provides novel intermediates used in the preparation of Aliskiren.
摘要:
Multi-step process for the preparation of compounds via hazardous intermediates comprising the steps of a) preparing in a microreactor a hazardous intermediate and b) optionally performing one or more reaction steps on the hazardous intermediate in one or more additional microreactors and c) further converting the hazardous intermediate with a suitable reaction agent in a subsequent microreactor until a stable end product is formed.