Chirality Transfer in the Formation of Poly(oxymethylene) Helices by Anionic Polymerization
作者:Christian Miculka、Christian R. Noe、Simon Eppacher
DOI:10.1002/hlca.201200032
日期:2012.5
In this article, we present the synthesis of a series of oligo(oxymethylenes) capped with 1‐phenylethanol and MeOH. The anionic condition affords enantiomerically pure oligo(oxymethylene) oligomers, while the cationic oligomerization leads to a racemic mixture of the oligo(oxymethylene) chain.
Facile Synthesis of Optically Active Tertiary Alcohol Building Blocks by Stereospecific C–H Insertion Reaction of Dichlorocarbene with Secondary Alcohol Derivatives
作者:Yukio Masaki、Hideki Arasaki、Motoo Shiro
DOI:10.1246/cl.2000.1180
日期:2000.10
Stereospecific C–H insertion of dichlorocarbene generated from a system CHCl3/50%NaOH/cetyltrimethylammonium chloride (as a PTC) proceeded at the carbinol carbon in the reaction of chiral secondary alcohol derivatives to provide α-dichloromethylated tertiary alcohol derivatives with complete retention of configuration.