370563-63-6Relevant academic research and scientific papers
Development of an efficient and stereoselective manufacturing route to idoxifene
Ace, Karl W.,Armitage, Mark A.,Bellingham, Richard K.,Blackler, Paul D.,Ennis, David S.,Hussain, Nigel,Lathbury, David C.,Morgan, David O.,O'Connor, Noah,Oakes, Graham H.,Passey, Stephen C.,Powling, Laurence C.
, p. 479 - 490 (2013/09/07)
A literature route to 1-(2-{4-[(E)-1-(4-iodophenyl)-2-phenyl-but-1-enyl]phenoxy}ethyl)pyrrolidine (idoxifene) has been modified to tackle various scale-up issues and provide initial supplies. A new highly efficient, robust, and stereoselective manufacturing route is described in detail. This route involves diastereoselective synthesis of tertiary alcohol (1RS,2SR)-1-(4-iodophenyl)-2-phenyl-1-[4-(2-pyrrolidin-1-yl-ethoxy)phenyl]butan- 1-ol by Grignard addition to the ketone 1-(4-iodophenyl)-2-phenyl-1-butanone followed by derivatisation and stereoselective syn elimination to provide idoxifene in excellent yield and geometric purity. Evaluation of a more direct route to idoxifene using a McMurry low-valent titanium coupling reaction is also described.
