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1 article(s) from Hashishita, Shohei

Gram-scale preparation of negative-type liquid crystals with a CF₂CF₂-carbocycle unit via an improved short-step synthetic protocol

Tatsuya Kumon,
Shohei Hashishita,
Takumi Kida,
Shigeyuki Yamada,
Takashi Ishihara and
Tsutomu Konno

Beilstein J. Org. Chem. 2018, 14, 148–154, doi:10.3762/bjoc.14.10

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Graphical Abstract

Figure 1: Typical examples of previously reported negative-type liquid crystals containing a CF₂CF₂-carbocycl...

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Scheme 1: Improved short-step synthetic protocol for multicyclic mesogens 1 and 2.

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Scheme 2: Short-step approach to CF₂CF₂-containing carbocycles.

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Figure 2: (a) Expected products of over-reaction in the Grignard reaction of dimethyl tetrafluorosuccinate (7...

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Scheme 3: Mechanism for the reaction of γ-keto ester 6 with vinyl Grignard reagents.

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Scheme 4: First multigram-scale preparation of CF₂CF₂-containing multicyclic mesogens.

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Scheme 5: Stereochemical assignment of the ring-closing metathesis products.

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Published 15 Jan 2018

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Gram-scale preparation of negative-type liquid crystals with a CF2CF2-carbocycle unit via an improved short-step synthetic protocol

Gram-scale preparation of negative-type liquid crystals with a CF₂CF₂-carbocycle unit via an improved short-step synthetic protocol