Scalable Synthesis of the Amber Odorant 9-<i>epi</i>-Ambrox through a Biomimetic Cationic Cyclization/Nucleophilic Bromination Reaction
作者:Raquel Fontaneda、Pedro Alonso、Francisco J. Fañanás、Félix Rodríguez
DOI:10.1021/acs.orglett.6b02266
日期:2016.9.16
A novel biomimetic nucleophilic bromocyclization reaction is used in the key step of a new and straightforward synthesis of 9-epi-Ambrox, an organic compound of high interest and value in the context of fragrances. This strategic reaction allows access to 9-epi-Ambrox on a gram scale from a dienyne derivative, easily available from geraniol, following a sequence of seven steps (35% global yield) with
作者:Weyerstahl, Peter、Schwieger, Ralf、Schwope, Ina、Hashem, Md. Abdul
DOI:——
日期:——
Experiments Directed toward the Total Synthesis of Terpenes. V. The Synthesis of the (±)-9-Isopimaradienes<sup>1,2</sup>
作者:Robert F. Church、Robert E. Ireland
DOI:10.1021/jo01036a003
日期:1963.1
Synthesis and Applications of Cyclohexenyl Halides Obtained by a Cationic Carbocyclisation Reaction
作者:Pedro Alonso、Pilar Pardo、Raquel Fontaneda、Francisco J. Fañanás、Félix Rodríguez
DOI:10.1002/chem.201702490
日期:2017.9.21
alkenyl halides (mainly fluorides, chlorides and bromides) from alkynol or enyne derivatives by an acid‐mediated cationic cyclisation reaction is disclosed. This high‐yielding, scalable and technically simple method complements and challenges conventional methodologies. This study includes the development of biomimetic cationic cyclisation reactions of polyenyne derivatives to give interesting halogen‐containing