{Despite|Regardless of|In spite of} the {great|fantastic|excellent|wonderful|good|terrific} progress in {research|study|analysis|investigation} on chiral molecular nanocarbons containing {multiple|numerous|several|a number of|many|various} helicenes, controlling the stereoselectivity {is still|continues to be} {a major|a significant} challenge, {especially|particularly|specifically|specially|in particular} when attempting to {increase|improve|boost|enhance|raise} {the number of|the amount of} helicene moieties. Herein, a novel molecular nanocarbon imides composed of C204 skeleton and eighteen imide groups was {successfully|effectively} synthesized {via|by way of|through|by means of} an inside–out ring closing {strategy|technique|method|approach|tactic} involving repeated Suzuki–Miyaura coupling for C–C bond formation and photocyclic aromatization. {Because of|Due to|As a result of} the presence of quad–core twelvefold [5]helicenes, {there are|you will find|you’ll find|you can find|you will discover|there are actually}, in theory, {more than|greater than} {one|1|a single|one particular} hundred stereoisomers. {However|Nevertheless|Nonetheless|Even so|On the other hand|Having said that}, only {one|1|a single|one particular} pair of stereoisomers with D3 symmetry was observed. {Despite|Regardless of|In spite of} the {large|big|huge|massive|substantial|significant} and rigid skeleton, the (3M,3M,3M,3M)+(3P,3P,3P,3P) enantiomers {were|had been|have been} {successfully|effectively} separated by chiral HPLC, {and the|and also the|as well as the|along with the|plus the} chiroptical properties {were|had been|have been} investigated by CD spectroscopy. 668261-21-0 In stock 4-Amino-2-fluoro-5-methoxybenzoic acid site PMID:23847952
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