The preparation of 3-substituted-1,5-dibromopentanes as precursors to heteracyclohexanes
作者:Bryan Ringstrand、Martin Oltmanns、Jeffrey A Batt、Aleksandra Jankowiak、Richard P Denicola、Piotr Kaszynski
DOI:10.3762/bjoc.7.49
日期:——
The methodology to prepare 3-substituted 1,5-dibromopentanes I and their immediate precursors, which include 3-substituted 1,5-pentanediols VII or 4-substituted tetrahydropyrans VIII, is surveyed. Such dibromides I are important intermediates in the preparation of liquid crystalline derivatives containing 6-membered heterocyclic rings. Four dibromides 1a-1d containing simple alkyl and more complex