Regioselective halogenation (chlorination, bromination, iodination) of several ergolines to the corresponding 2-halo derivatives was performed in moderate to good yields by potential controlled electrolysis at platinum in acetonitrile in the presence of tetrabutylammonium halide and lithium perchlorate. Alternatively, ergolines underwent a facile iodination in excellent yields by exposure to an anodically oxidized solution of iodine in acetonitrile.
Krepelka, Jiri; Holubek, Jiri; Semonsky, Miroslav, Collection of Czechoslovak Chemical Communications, 1980, vol. 45, # 3, p. 755 - 760
作者:Krepelka, Jiri、Holubek, Jiri、Semonsky, Miroslav
DOI:——
日期:——
Krepelka,J. et al., Collection of Czechoslovak Chemical Communications, 1977, vol. 42, p. 2953 - 2956
作者:Krepelka,J. et al.
DOI:——
日期:——
KREPELKA, J.;SEMONSKY, M.
作者:KREPELKA, J.、SEMONSKY, M.
DOI:——
日期:——
[EN] PROCESS FOR THE SYNTHESIS OF PERGOLIDE<br/>[FR] PROCEDE DE SYNTHESE DE PERGOLIDE
申请人:ANTIBIOTICOS SPA
公开号:WO2003078432A2
公开(公告)日:2003-09-25
A process for the synthesis of pergolide (Formula(I)) (D-6-n-propyl-8βmethylmercaptomethylergo line) from acid 9,10-dihydrolysergic is herein disclosed. The process can be carried out without isolating most intermediates and is particularly convenient both from the yield and safety standpoint. Moreover, pergolide thereby obtained is highly pure and can be conveniently transformed into pergolide mesylate.