作者:Benjamin J. Lidster、Dharam R. Kumar、Andrew M. Spring、Chin-Yang Yu、Madeleine Helliwell、James Raftery、Michael L. Turner
DOI:10.1039/c6ob00885b
日期:——
with n-octyl chains have been synthesised from the corresponding dithia[3.3]paracyclophanes using a benzyne induced Stevens rearrangement. The use of 2-(trimethylsilyl)phenyl trifluoromethanesulfonate and tetra-n-butylammonium fluoride as the in situ benzyne source gave significantly improved yields over traditional sources of benzyne and enabled the preparation of n-octyl substituted [2.2]paracyclophane-1
Stereoretentive Ring-Opening Metathesis Polymerization to Access All-<i>cis</i> Poly(<i>p</i>-phenylenevinylene)s with Living Characteristics
作者:Ting-Wei Hsu、Cheoljae Kim、Quentin Michaudel
DOI:10.1021/jacs.0c04068
日期:2020.7.15
groups. While many synthetic methods afford PPVs with all-trans stereochemistry, very few deliver the all-cis congeners. We report herein a synthesis of all-cis PPVs with living characteristics via stereoretentive ring-openingmetathesis polymerization (ROMP). Exquisite catalyst control allows for the preparation of homopolymers or diblock copolymers with perfect stereoselectivity, narrow dispersities