Resolution of a Configurationally Stable Hetero[4]helicene
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DOI: 10.3390/molecules27041160
Abstract: We have developed an efficient chemical resolution of racemic hydroxy substituted dithia-aza[4]helicenes (DTA[4]H) 1(OH) using enantiopure acids as resolving agents. The better diastereomeric separation was achieved on esters prepared with (1S)-(−)-camphanic acid. Subsequent simple manipulations… read more here.
Keywords: hetero helicene; resolution configurationally; configurationally stable; resolution ... See more keywords
Two-Step Synthesis, Structure, and Optical Features of a Double Hetero[7]helicene
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DOI: 10.3390/molecules27249068
Abstract: A novel double aza-oxa[7]helicene was synthesized from the commercially available N1,N4-di(naphthalen-2-yl)benzene-1,4-diamine and p-benzoquinone in two steps. Combining the acid-mediated annulation with the electrochemical sequential reaction (oxidative coupling and dehydrative cyclization) afforded this double hetero[7]helicene. Moreover,… read more here.
Keywords: two step; optical features; hetero helicene; double hetero ... See more keywords