Aza-Michael Mono-addition Using Acidic Alumina under Solventless Conditions
作者:Giovanna Bosica、Roderick Abdilla
DOI:10.3390/molecules21060815
日期:——
Aza-Michael reactions between primary aliphatic and aromatic amines and various Michael acceptors have been performed under environmentally-friendly solventless conditions using acidic alumina as a heterogeneous catalyst to selectively obtain the corresponding mono-adducts in high yields. Ethylacrylate was the main acceptor used, although others such as acrylonitrile, methyl acrylate and acrylamide
Tetrahydroisoquinoline compounds, process for preparing them and pharmaceutical compositions containing them
申请人:Tanabe Seiyaku Co., Ltd.
公开号:EP0018549A2
公开(公告)日:1980-11-12
A tetrahydroisoquinoline compound of the formula:
wherein R1 is alkyl of one to six carbon atoms, cycloalkyl of threeto six carbon atoms allyl or propargyl, R2 is hydrogen or alkyl of one to six carbon atoms, and R3 is hydrogen, alkyl of one to six carbon atoms or benzyl. Methods for preparing the compound (I) are disclosed. The compound (I) and a pharmaceutically acceptable salt thereof are useful as a diagnostic or therapeutic agent for angiotensin-related hypertension.
synthesizes biologically active compounds. Notably, the resulting tricyclic benzo[b]azepines offer diversification opportunities through simple transformations. DFT calculations elucidate a seven-membered ring closure mechanism involving the alkenyl radical and Pd(I) rebound alongside a concerted metalation–deprotonation (CMD) process.