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Beilstein J. Org. Chem. 2018, 14, 148–154, doi:10.3762/bjoc.14.10
Graphical Abstract
Figure 1: Typical examples of previously reported negative-type liquid crystals containing a CF2CF2-carbocycl...
Scheme 1: Improved short-step synthetic protocol for multicyclic mesogens 1 and 2.
Scheme 2: Short-step approach to CF2CF2-containing carbocycles.
Figure 2: (a) Expected products of over-reaction in the Grignard reaction of dimethyl tetrafluorosuccinate (7...
Scheme 3: Mechanism for the reaction of γ-keto ester 6 with vinyl Grignard reagents.
Scheme 4: First multigram-scale preparation of CF2CF2-containing multicyclic mesogens.
Scheme 5: Stereochemical assignment of the ring-closing metathesis products.