[EN] PROCESS FOR PREPARING HYDROCODONE USING A SUPER ACID<br/>[FR] PROCÉDÉ DE PRÉPARATION D'HYDROCODONE À L'AIDE D'UN SUPERACIDE
申请人:MALLINCKRODT INC
公开号:WO2010065441A1
公开(公告)日:2010-06-10
The present disclosure generally relates to a process for converting a fused, tricyclic compound to a fused, tetracyclic compound that includes a furan ring therein. More particularly, the present disclosure related to a process for preparing a hydrocodone compound, or a compound structurally related thereto, and in particular (+)-hydrocodone, by subjecting a structurally corresponding sinomeπine starting compound to a super acid-assisted furan ring closure reaction. Formula I, II. Examples of super acids useful in the processes described herein include, but are not limited to, trifluoromethanesulfonic acid (CF3SO3H), tetrafluoroboric acid (HBF4), fluorophosphoric acid (HPF6), fluorosulfuric acid (FSO3H). and fiuoroantimonic acid (HSbF8), fluorophosphoric acid (FP(O)(OH)2) as well as combinations thereof.
本公开涉及一种将融合的三环化合物转化为含有呋喃环的融合四环化合物的过程。更具体地,本公开涉及一种通过将结构相应的西诺美芦定起始化合物置于超强酸辅助下进行呋喃环闭合反应,制备羟考酮化合物或结构相关的化合物,尤其是(+)-羟考酮的过程。公式I,II。本文所述过程中有用的超强酸包括但不限于三氟甲烷磺酸(CF3SO3H),四氟硼酸(HBF4),氟磷酸(HPF6),氟磺酸(FSO3H)和氟锑酸(HSbF8),氟磷酸(FP(O)(OH)2)以及它们的组合。